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Nlight Inc patents


Recent patent applications related to Nlight Inc. Nlight Inc is listed as an Agent/Assignee. Note: Nlight Inc may have other listings under different names/spellings. We're not affiliated with Nlight Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Nlight Inc-related inventors


Optical power density control in fiber-coupled laser

An optical power control system includes a laser source to provide an optical beam, a variable beam characteristics (vbc) fiber, and a controller operatively coupled to the vbc fiber and configured to control, in response to information indicating change in optical power of the optical beam, different states of perturbation so as to control optical power density.. . ... Nlight Inc

Multi-wavelength fiber laser

An optical beam delivery device, such as an optical fiber, includes: a first length of fiber having a first refractive index profile (rip) to enable modification of one or more beam characteristics of an optical beam having a first wavelength; and a second length of fiber having at least one wavelength-modifying confinement region and situated to receive the optical beam from the first length of fiber.. . ... Nlight Inc

Systems and methods for modifying beam characteristics

Systems and methods for modifying an optical beam and adjusting one or more beam characteristics of an optical beam are provided. The system may include a first length of fiber operably coupled with an optical beam source and configured to receive an optical beam therefrom. ... Nlight Inc

Fiber optical beam delivery device producing selectable intensity profiles

An optical beam delivery device is configured to generate, from an optical beam, selectable intensity profiles. The device has a first length of fiber having a first refractive index profile (rip), and a second length of fiber having second rip that is different from the first rip. ... Nlight Inc

Fiber-coupled device for varying beam characteristics

Disclosed herein are methods, apparatus, and systems for providing an optical beam delivery system, comprising an optical fiber including a first length of fiber comprising a first rip formed to enable, at least in part, modification of one or more beam characteristics of an optical beam by a perturbation assembly arranged to modify the one or more beam characteristics, the perturbation assembly coupled to the first length of fiber or integral with the first length of fiber, or a combination thereof and a second length of fiber coupled to the first length of fiber and having a second rip formed to preserve at least a portion of the one or more beam characteristics of the optical beam modified by the perturbation assembly within one or more first confinement regions. The optical beam delivery system may include an optical system coupled to the second length of fiber including one or more free-space optics configured to receive and transmit an optical beam comprising the modified one or more beam characteristics.. ... Nlight Inc

Methods of and systems for materials processing using optical beams

A method of materials processing using an optical beam includes: launching the optical beam into a first length of fiber having a first refractive-index profile (rip); coupling the optical beam from the first length of fiber into a second length of fiber having a second rip; modifying one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first rip can be the same as or differ from the second rip. ... Nlight Inc

Fiber optical beam delivery device producing output exhibiting intensity distribution profile having non-zero ellipticity

An optical beam delivery device formed of optical fibers that are configured to produce an output exhibiting an intensity distribution profile having non-zero ellipticity includes a first length of fiber through which an incident optical beam having beam characteristics propagates and which has a first refractive index profile (rip). The first rip enables, in response to an applied perturbation, modification of the beam characteristics of the optical beam to form an adjusted beam having modified beam characteristics relative to the beam characteristics of the optical beam. ... Nlight Inc

Frequency-converted optical beams having adjustable beam characteristics

An optical beam delivery system, includes: an optical beam source; a fiber assembly situated to receive and modify one or more beam characteristics of an optical beam; and a nonlinear frequency-conversion stage in optical communication with the fiber assembly and situated to receive and frequency-convert an optical beam from a first wavelength to one or more second wavelengths. The fiber assembly includes: a first length of fiber comprising a first rip formed to enable modification of the one or more beam characteristics of the optical beam by a perturbation device, and a second length of fiber having a second rip coupled to the first length of fiber, the second rip formed to confine at least a portion of modified beam characteristics of the optical beam within one or more confinement regions. ... Nlight Inc

All-fiber optical beam switch

An all-fiber optical beam switch mechanism includes a first length of fiber through which an incident optical beam having beam characteristics propagates along a first propagation path and which has a first refractive index profile (rip). The first rip enables, in response to an applied perturbation, modification of the optical beam to form an adjusted optical beam that is movable to propagate along a second propagation path. ... Nlight Inc

Multicore fiber-coupled optical probing techniques

An optical beam delivery device establishes, from an optical beam, an optical trap that is moveable to different optical trap locations. The device has a first length of fiber through which the optical beam propagates along a propagation path and which has a first refractive index profile (rip) enabling modification of the propagation path to form an adjusted optical beam movable to propagate along different propagation paths in response to different states of applied perturbation. ... Nlight Inc

Production of temporally apparent intensity distribution by rapid perturbation of variable beam characteristics optical fiber

Disclosed are an optical beam delivery device, systems, and methods for sequentially adjusting, with respect to members of a set of confinement regions, a propagation path for establishing a controllable, temporally apparent intensity distribution. The disclosed techniques entail applying to a variable beam characteristics (vbc) fiber different states perturbation to change the propagation path and the members of the set of confinement regions through which a confined portion of an adjusted optical beam propagates, thereby establishing at an output end of the vbc fiber the controllable, temporally apparent intensity distribution.. ... Nlight Inc

Optical fiber bending mechanisms

Fiber bending mechanisms vary beam characteristics by deflecting or bending one or more fibers, by urging portions of one or more fibers toward a fiber shaping surface having a selectable curvature, or by selecting a fiber length that is to be urged toward the fiber shaping surface. In some examples, a fiber is secured to a flexible plate to conform to a variable curvature of the flexible plate. ... Nlight Inc

Multi-operation laser tooling for deposition and material processing operations

Disclosed herein are methods, apparatus, and systems for a multi-operation optical beam delivery device having a laser source to generate the optical beam. A beam characteristic conditioner that, in response to a control input indicating a change between the different laser process operations, controllably modifies the beam characteristics for a corresponding laser process operation of the different laser process operations. ... Nlight Inc

Beam modification structures and methods of modifying optical beam characteristics using the beam modification structures

An optical beam delivery device. The device comprises a first length of fiber comprising a first rip formed to enable the adjusting of one or more beam characteristics of an optical beam by a perturbation device. ... Nlight Inc

08/02/18 / #20180214979

Optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control

An optical beam delivery device is formed of optical fibers configured for beam divergence or mode coupling control. An incident optical beam propagates through a first length of fiber, which is coupled to a second length of fiber and has a first refractive index profile (rip). ... Nlight Inc

08/02/18 / #20180214951

Additive manufacturing systems and methods for the same

Additive manufacturing systems and methods for fabricating an article are provided. The additive manufacturing system may include a substrate and a layering device configured to fabricate a first layer of the article on the substrate. ... Nlight Inc

08/02/18 / #20180214950

Systems for and methods of temperature control in additive manufacturing

An apparatus for temperature control in additive manufacturing may include: an optical beam source configured to generate one or more optical beams; a homogenizer configured to flatten an irradiance profile of the generated one or more optical beams; and/or an optical system configured to form the generated one or more optical beams so as to match a portion of a shape of a powder bed. The apparatus may include optical beam sources configured to generate two or more optical beams; and/or an optical system configured to form the generated two or more optical beams to match the portion of the shape of the powder bed. ... Nlight Inc

07/26/18 / #20180212395

Fiber-based saturable absorber

Methods, apparatus, and systems for active saturable absorbance of an optical beam. An active saturable absorber may comprise an optical input to receive an optical beam, and one or more lengths of fiber between the optical input and an optical output. ... Nlight Inc

07/19/18 / #20180205195

Fiber-based optical modulator

Methods, apparatus, and systems for modulation of a laser beam. An optical modulator may comprise an optical input to receive an optical beam, and one or more lengths of fiber between the optical input and an optical output. ... Nlight Inc

07/19/18 / #20180203185

Fiber with depressed central index for increased beam parameter product

A method includes generating a multimode laser beam having an initial beam parameter product (bpp) and directing the multimode laser beam to an input end of a fiber so as to produce an output beam at an output of the fiber with a final bpp that is greater than the initial bpp. Another method includes measuring a base bpp associated with a multimode laser beam generated from a laser source and emitted from an output fiber output end, determining a bpp increase for the multimode laser beam, and selecting a bpp increasing optical fiber having an input end and an output end so that the multimode laser beam with the base bpp coupled to the input end has an output bpp at the output end of the bpp increasing optical fiber corresponding to the determined bpp increase.. ... Nlight Inc

07/12/18 / #20180198258

Power and brightness scaling in fiber coupled diode lasers using diodes with optimized beam dimensions

A number of beams that can be coupled into an optical fiber can be increased using emitted beams having greater divergence, thus providing increased beam power. Alternatively, with a fixed number of emitters, total optical power can be maintained with fewer beams in an output beam with a smaller numerical aperture.. ... Nlight Inc

07/12/18 / #20180198252

Scalable high power fiber laser

A modular and scalable high-power fiber laser system is configurable to generate 1 kw or more of laser output, and includes one or more separable pump modules separately disposed from each other, each pump module including a plurality of fiber-coupled component pump sources optically combined by one or more fiber-based pump module pump combiners, each pump module providing one or more pump module fiber outputs, and a gain module separately disposed from the one or more separable pump modules and including one or more gain module pump fiber inputs optically coupled to corresponding ones of the pump module fiber outputs, and including a gain fiber optically coupled to the one or more gain module pump fiber inputs, the gain fiber configured to generate a gain module fiber output power scalable in relation to the number and power of said pump module fiber outputs coupled to the gain fiber.. . ... Nlight Inc

07/12/18 / #20180198251

Tandem pumped fiber laser or fiber amplifier

In an example, an apparatus to tandem pump a fiber laser or fiber amplifier may include a combiner; a power amplifier or a power oscillator, or a combination thereof, coupled to an output of the combiner; a seed laser to output light to the power amplifier or the power oscillator, or the combination thereof, via the combiner; and a tandem pump to generate light of a pump source signal, wherein the light of the pump source signal is output to the combiner to cladding pump the power amplifier or the power oscillator, or the combination thereof. Other embodiments may be disclosed and/or claimed.. ... Nlight Inc

07/05/18 / #20180188544

Method and system for cutting a material using a laser having adjustable beam characteristics

Disclosed herein are methods, apparatus, and systems for perturbing a laser beam propagating within a first length of fiber to adjust one or more beam characteristics of the laser beam in the first length of fiber or a second length of fiber or a combination thereof, coupling the perturbed laser beam into a second length of fiber and maintaining at least a portion of one or more adjusted beam characteristics within a second length of fiber having.. . ... Nlight Inc

07/05/18 / #20180185965

Use of variable beam parameters to control a melt pool

A method for forming an article includes: forming a melt pool; exposing the melt pool to an optical beam having at least one beam characteristic; forming a keyhole cavity in the melt pool, the keyhole cavity having at least one keyhole cavity property; and modifying the at least one beam characteristic in response to a change in the keyhole cavity property.. . ... Nlight Inc

06/28/18 / #20180183214

Low cost optical pump laser package

. . Laser diode packages include a rigid thermally conductive base member that includes a base member surface situated to support at least one laser diode assembly, at least one electrode standoff secured to the base member surface that has at least one electrical lead having a first end and a second end with the first end secured to a lead surface of the electrode standoff, and a lid member that includes a lid portion and a plurality of side portions extending from the lid portion and situated to be secured to the base member so as to define sides of the laser diode package, wherein at least one of the side portions includes a lead aperture situated to receive the second end of the secured electrical lead that is insertable through the lead aperture so that the lid member extends over the base member to enclose the laser diode package.. . ... Nlight Inc

06/28/18 / #20180180813

Methods of and systems for processing using adjustable beam characteristics

A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (rip); coupling the optical beam from the first length of fiber into a second length of fiber having a second rip and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first rip may differ from the second rip.. ... Nlight Inc

06/28/18 / #20180180803

Use of variable beam parameters to control solidification of a material

A method for forming an article includes providing a material having a first material property; forming a melt pool by exposing the material to an optical beam having at least one beam characteristic, wherein the melt pool has at least one melt pool property determinative of a second material property of the material; and modifying the at least one beam characteristic in response to a change in the melt pool property.. . ... Nlight Inc

06/21/18 / #20180175588

Angled dbr-grating laser/amplifier with one or more mode-hopping regions

A semiconductor laser device is disclosed that includes a laser resonator situated to produce a laser beam, with the laser resonator including an angled distributed bragg reflector (a-dbr) region including first and second ends defining an a-dbr region length corresponding to a bragg resonance condition with the first end being uncleaved and including a first mode hop region having a first end optically coupled to the a-dbr region first end and extending a first mode hop region length associated with the a-dbr region length to a second end so as to provide a variable longitudinal mode selection for the laser beam.. . ... Nlight Inc

06/21/18 / #20180175578

High-power, single-mode fiber sources

An optical apparatus includes one or more pump sources situated to provide laser pump light, and a gain fiber optically coupled to the one or more pump sources, the gain fiber including an actively doped core situated to produce an output beam, an inner cladding and outer cladding surrounding the doped core and situated to propagate pump light, and a polymer cladding surrounding the outer cladding and situated to guide a selected portion of the pump light coupled into the inner and outer claddings of the gain fiber. Methods of pumping a fiber sources include generating pump light from one or more pump sources, coupling the pump light into a glass inner cladding and a glass outer cladding of a gain fiber of the fiber source such that a portion of the pump light is guided by a polymer cladding surrounding the glass outer cladding, and generating a single-mode output beam from the gain fiber.. ... Nlight Inc

06/21/18 / #20180175577

Fiber laser packaging

A packaged fiber laser may include a wound fiber laser spiral including a metal ribbon having ends, surfaces, and edges; a fiber laser on a first one of the surfaces of the metal ribbon; and a metal sheet coupled to a first one of the edges of the metal ribbon or a second one of the surfaces of the metal ribbon. Packaging for a fiber laser may include a cooling plate coupled to a second one of the edges of the metal ribbon or the second surface of the metal ribbon, the cooling plate including: a casing including a cover, a bottom, and an outer sidewall; flow channels formed inside the casing, the flow channels defined by inner sidewalls of the cooling plate, wherein the cover is coupled to a top of the inner sidewalls to enclose the flow channel; and an inlet to deliver coolant to the flow channels.. ... Nlight Inc

06/14/18 / #20180161935

Method of forming pores in three-dimensional objects

A method of making a porous three-dimensional object. The method comprises: a) positioning a first layer of particles on a build plate; b) heating the first layer of particles sufficiently to fuse the particles together to form a first build layer having a first porosity; c) exposing the first build layer to a laser beam to form one or more pores, the exposed first build layer having a first modified porosity, the laser beam being emitted from an optical fiber; d) adjusting one or more beam characteristics of the laser beam prior to or during the exposing of the first build layer, the adjusting of the laser beam occurring prior to the laser beam being emitted from the optical fiber; e) positioning an additional layer of particles on the exposed first build layer; f) heating the additional layer of particles sufficiently to fuse the particles together to form a second build layer having a second porosity; g) exposing the second build layer to the laser beam to form one or more pores, the exposed second build layer having a second modified porosity, the laser beam being emitted from the optical fiber; h) adjusting one or more beam characteristics of the laser beam after fusing the particles to form the second build layer and prior to or during the exposing of the second build layer, the adjusting of the laser beam occurring prior to the laser beam being emitted from the optical fiber, and i) repeating e), f), optionally g) and optionally h) to form a three-dimensional object.. ... Nlight Inc

06/14/18 / #20180161873

Method of forming three-dimensional objects

A method of making a three-dimensional object. The method comprises: a) positioning a layer of particles over a build plate; b) exposing the layer of particles to a first laser beam having a first set of beam characteristics, thereby heating the layer sufficiently to fuse at least a portion of the particles together to form a build layer; c) exposing a first region of one of i) the layer of particles or ii) the build layer to a second laser beam having a second set of beam characteristics to provide a first temperature profile for the first region; and d) exposing a second region of one of i) the layer of particles or ii) the build layer to a third laser beam having a third set of beam characteristics to provide a second temperature profile for the second region, the second temperature profile being different than the first temperature profile, wherein both the first region and the second region are in the layer of particles or both the first region and the second region are in the build layer.. ... Nlight Inc

05/24/18 / #20180145476

Pump combiner for multi-clad fibers

Disclosed herein is a fiber pump combiner, comprising, a multi-clad fiber comprising an outer cladding layer and an inner cladding layer, a plurality of tapered trenches formed in the inner cladding layer and a plurality of pump fibers, wherein the plurality of pump fibers are tapered and fused into corresponding ones of the plurality of tapered trenches.. . ... Nlight Inc

05/03/18 / #20180123317

Method, system and apparatus for higher order mode suppression

A laser diode vertical epitaxial structure, comprising a transverse waveguide comprising an active layer between an n-type semiconductor layer and a p-type semiconductor layer wherein the transverse waveguide is bounded by a lower index n-cladding layer on an n-side of the transverse waveguide and a lower index p-cladding layer on a p-side of the transverse waveguide, a lateral waveguide that is orthogonal to the transverse waveguide, wherein the lateral waveguide is bounded in a longitudinal direction at a first end by a facet coated with a high reflector (hr) coating and at a second end by a facet coated with a partial reflector (pr) coating and a higher order mode suppression layer (homsl) disposed adjacent to at least one lateral side of the lateral waveguide and that extends in a longitudinal direction.. . ... Nlight Inc

04/19/18 / #20180109064

Tandem pumped fiber amplifier

In an example, a tandem pumped fiber amplifier may include a seed laser, one or more diode pumps, and a plural core fiber including a first core and a second core, the second core surrounding the first core. The plural core fiber may include a first section to operate as an oscillator and a second different section to operate as a power amplifier. ... Nlight Inc

04/12/18 / #20180102623

Fiber pump combiner

An optical fiber combiner comprising a coupling device having an input surface area, and you ain, and an output surface area, aout, wherein the input surface area ain is greater than the output surface area aout, and a plurality of optical fibers each having an input surface and an output surface, wherein the output surfaces of the plurality of optical fibers are coupled to the coupling device, wherein the coupling device combines optical power emitted by the plurality of optical fibers.. . ... Nlight Inc

04/05/18 / #20180097333

Fiber laser fiber packaging and thermal management

A fiber laser system comprises a main body, wherein the main body includes one or more fiber laser system components and a first wall hingedly attached to the main body along a first edge, the first wall having a first wall open position and a first wall closed position and a plurality of feed fiber management and splicing components mounted to the first wall. Additionally and/or alternatively, the laser system may comprise a cooling plate hingedly attached to the main body, the cooling plate has a cooling plate open position and a cooling plate closed position. ... Nlight Inc

03/29/18 / #20180088358

Adjustable beam characteristics

Disclosed herein are methods, apparatus, and systems for providing an optical beam delivery system, comprising an optical fiber including a first length of fiber comprising a first rip formed to enable, at least in part, modification of one or more beam characteristics of an optical beam by a perturbation assembly arranged to modify the one or more beam characteristics, the perturbation assembly coupled to the first length of fiber or integral with the first length of fiber, or a combination thereof and a second length of fiber coupled to the first length of fiber and having a second rip formed to preserve at least a portion of the one or more beam characteristics of the optical beam modified by the perturbation assembly within one or more first confinement regions. The optical beam delivery system may include an optical system coupled to the second length of fiber including one or more free-space optics configured to receive and transmit an optical beam comprising the modified one or more beam characteristics.. ... Nlight Inc

03/29/18 / #20180088357

Adjustable beam characteristics

Disclosed herein are methods, apparatus, and systems for perturbing an optical beam propagating within a first length of fiber to adjust one or more beam characteristics of the optical beam in the first length of fiber or a second length of fiber or a combination thereof, coupling the perturbed optical beam into a second length of fiber and maintaining at least a portion of one or more adjusted beam characteristics within a second length of fiber having.. . ... Nlight Inc

03/29/18 / #20180088343

Adjustable beam characteristics

Disclosed herein are methods, apparatus, and systems for providing an optical beam delivery device, comprising a first length of fiber comprising a first rip formed to enable modification of one or more beam characteristics of an optical beam by a perturbation device and a second length of fiber having a second rip coupled to the first length of fiber, the second rip formed to confine at least a portion of the modified beam characteristics of the optical beam within one or more confinement regions.. . ... Nlight Inc

03/22/18 / #20180083418

Cryogenic cooling of diode laser with coolant recovery

A laser system includes a plurality of diode lasers, a cryogenic cooling system circulating a cryogenic coolant and coupled to the plurality diode lasers to cool the plurality of diode lasers with the cryogenic coolant, and a fuel cell coupled to the plurality of diode lasers to power the plurality of diode lasers and situated to receive the cryogenic coolant from the cryogenic cooling system as fuel for the fuel cell. A method of operating a high power laser system includes cooling a plurality of diode lasers with a cryogenic cooling system circulating a cryogenic coolant, fueling a fuel cell with a portion of the cryogenic coolant circulating in the cryogenic cooling system, and powering the plurality of diode lasers with power generated by the fuel cell.. ... Nlight Inc

03/15/18 / #20180075939

Optimization of high resolution digitally encoded laser scanners for fine feature marking

Disclosed herein are laser scanning systems and methods of their use. In some embodiments, laser scanning systems can be used to ablatively or non-ablatively scan a surface of a material. ... Nlight Inc

03/01/18 / #20180062347

Laser cooling system

A laser cooling system includes a first tubing, a second tubing, and a cold plate assembly including a first channel to receive the first tubing and a second channel to receive the second tubing. A joint removably couples the first tubing to the second tubing and at least one component mounted on the cold plate assembly over the first tubing or the second tubing. ... Nlight Inc

03/01/18 / #20180059425

Fiber combiner with input port dump

An apparatus includes a plurality of input fibers including one or more signal fibers and one or more beam dump fibers, a signal combiner having an input end coupled to the plurality of input fibers so as to couple portions of one or more signal beams respectively propagating in one or more of the signal fibers to form a combiner beam, an output fiber coupled to an output end of the signal combiner so as to receive the combiner beam, and a beam dump coupled to at least one of the one or more beam dump fibers so as to receive a light beam propagating from the output fiber that is associated with the combiner beam.. . ... Nlight Inc

03/01/18 / #20180059351

Laser optical fiber tray

A laser optical fiber tray is generally presented. In some embodiments, the optical fiber tray comprises an enclosure having an opening in a bottom of the enclosure to accept a feeding fiber exiting from a top of a laser system rack, an opening in a side of the enclosure to allow passage of the feeding fiber out of the enclosure, a removable panel to allow access to an interior of the enclosure and two or more coil guides affixed within the interior of the enclosure, the coil guides spaced apart by a distance that defines a minimum diameter for a loop of the feeding fiber to be contained within the enclosure. ... Nlight Inc

03/01/18 / #20180059343

Back-reflection protection and monitoring in fiber and fiber-delivered lasers

A system includes an optical fiber situated to propagate a laser beam received from a laser source to an output of the optical fiber, a first cladding light stripper optically coupled to the optical fiber and situated to extract at least a portion of forward-propagating cladding light in the optical fiber, and a second cladding light stripper optically coupled to the optical fiber between the first cladding light stripper and the optical fiber output and situated to extract at least a portion of backward-propagating cladding light in the optical fiber.. . ... Nlight Inc

03/01/18 / #20180059342

Laser module service shelf

A laser module service shelf is generally presented. In some embodiments, a laser system includes a rack including a stack of slots to support a plurality of laser modules in first positions within the rack, wherein the rack comprises a pair of struts extending at opposite sides of an opening in the rack through which the laser modules may pass, and a module service shelf attachable to the struts to support a weight of one of the laser modules in a second position that is cantilevered from the rack in alignment with the opening and one of the slots, wherein the module service shelf comprises a plurality of detachable sections. ... Nlight Inc

03/01/18 / #20180059323

Splice with cladding mode light stripping

Beam combining optical systems include a fiber beam combiner having multiple inputs to which output fibers of laser diode sources are spliced. Cladding light stripping regions are situated at the splices, and include exposed portions of fiber claddings that are at least partially encapsulated with an optical adhesive or a polymer. ... Nlight Inc

03/01/18 / #20180056442

Laser power distribution module

A laser system including a rack, a plurality of laser modules mounted in the rack to drive light through an optical fiber exiting the system, and a power distribution module to distribute electricity through circuit branches coupled to the laser modules is generally presented. In some embodiments, the rack includes a horizontal cross-member with a bottom rack flange extending vertically and defining a bottom of an opening in the rack. ... Nlight Inc

01/11/18 / #20180011243

Spun round core fiber

Optical waveguide cores having refractive index profiles that vary angularly about a propagation axis of the core can provide single-mode operation with larger core diameters than conventional waveguides. In one representative embodiment, an optical waveguide comprises a core that extends along a propagation axis and has a refractive index profile that varies angularly about the propagation axis. ... Nlight Inc

12/28/17 / #20170373489

Transmission circuit for ethernet device

A transmission circuit including four transmission component sets for an ethernet device is provided. Each transmission component set are coupled between an ethernet connector and an ethernet chip. ... Nlight Inc

12/14/17 / #20170358900

Low size and weight, high power fiber laser pump

A device for cooling a laser diode pump comprising a low size weight power efficient (swap) laser diode (lsld) assembly, including a laser diode coupled to a submount on a first surface, the submount comprising a first thermally conductive material and a heatsink coupled to a second surface of the submount, wherein the heatsink comprises a second thermally conductive material, the heatsink comprising one or more members formed on a side opposite the coupled submount. The device further comprising a housing coupled to the lsld assembly, the housing comprising a carrier structure having an aperture configured to support the lsld assembly on a first side and having a plurality of channels on a second side, a bottom segment configured to couple to the carrier segment to create an enclosure around the channels between a top side of the bottom segment and the second side of the carrier structure, an inlet and outlet formed in the housing for transporting a coolant into and out of the channels in the enclosure, wherein the members are disposed within the enclosure so as to expose the members to the coolant.. ... Nlight Inc

12/07/17 / #20170353006

Multifunctional circuit for monitoring fiber cable health

Described herein is a fiber laser coupler, comprising a fiber laser cable enclosed in a housing, the housing includes a circuit and a temperature sensitive variable resistance element (tsvre) coupled to the circuit, wherein the tsvre is in thermal contact with one or more locations within the housing and is configured to provide a resistance in the circuit associated with a temperature of the tsvre, wherein the circuit is further configured to couple to a processor configured to determine a temperature of the tsvre based on reading the resistance in the circuit.. . ... Nlight Inc

11/16/17 / #20170331244

Light trap for high power fiber laser connector

A fiber laser system includes a fiber laser connector having a housing to terminate a fiber that generates a laser beam. A chamber extends internally along a length of the housing. ... Nlight Inc

11/16/17 / #20170329092

Double helix coolant path for high power fiber connector

A fiber connector, comprising a housing having a chamber extending in a lengthwise direction from a first end configured to receive a fiber to a second end configured to connect the fiber to a laser processing head and a channel disposed on an exterior surface of the chamber, the channel comprising a double helical structure.. . ... Nlight Inc

11/16/17 / #20170329085

High-numerical aperture light stripper

A fiber connector, comprising a housing comprising a region extending in a lengthwise direction an optical fiber disposed in the region, a first portion of the optical fiber comprising an inner core, a cladding layer surrounding the core, and a first outer polymer layer surrounding the cladding layer and a second portion of the optical fiber comprising the inner core, the cladding layer surrounding the core and a second outer polymer layer that is different from the first polymer layer.. . ... Nlight Inc

11/09/17 / #20170320168

Fine-scale temporal control for laser material processing

Methods include directing a laser beam to a target along a scan path at a variable scan velocity and adjusting a digital modulation during movement of the laser beam along the scan path and in relation to the variable scan velocity so as to provide a fluence at the target within a predetermined fluence range along the scan path. Some methods include adjusting a width of the laser beam with a zoom beam expander. ... Nlight Inc

10/05/17 / #20170288370

High brightness coherent multi-junction diode lasers

Laser diodes formed on a common substrate with layers of suitable thickness and refractive indices produce output beams that are coherently coupled. A phase mask can be situated to produce phase differences in one or more of the output beams to produce a common wavefront phase. ... Nlight Inc

10/05/17 / #20170288364

Diode laser packages with flared laser oscillator waveguides

A high brightness diode laser package includes a plurality of flared laser oscillator waveguides arranged on a stepped surface to emit respective laser beams in one or more emission directions, a plurality of optical components situated to receive the laser beams from the plurality of flared laser oscillator waveguides and to provide the beams in a closely packed relationship, and an optical fiber optically coupled to the closely packed beams for coupling the laser beams out of the diode laser package.. . ... Nlight Inc

09/21/17 / #20170271837

Spectrally multiplexing diode pump modules to improve brightness

A method of spectrally multiplexing diode pump modules to increase brightness includes generating one or more pump beams from respective diode lasers at a first wavelength in a diode laser package, generating one or more pump beams from respective diode lasers at a second wavelength different from the first wavelength in the diode laser package, wavelength combining at least one of the pump beams at the first wavelength with at least one of the pump beams at the second wavelength to form one or more combined pump beams, and receiving the combined pump beams in a pump fiber coupled to the diode laser package. Laser systems can include multi-wavelength pump modules and a gain fiber having a core actively doped so as to have an absorption spectrum corresponding to the multiple wavelength, the gain fiber situated to receive the pump light and to produce an output beam at an output wavelength.. ... Nlight Inc

08/24/17 / #20170244212

Distributed laser power architecture for laser diode arrays

Laser diode drivers include switching power supplies situated proximate one or more laser diode arrays so as to provide laser diode drive currents at frequencies of 200 khz or more. The switching power supplies are generally buck/boost supplies that can provide well regulated outputs even when regulating remote power received from a power supply via a cables having inductances in the hundreds of nh. ... Nlight Inc

08/17/17 / #20170235057

Passively aligned single element telescope for improved package brightness

Beam compressors include separated surfaces having positive and negative optical powers. A surface spacing is selected so that a collimated beam input to the beam compressor is output as a collimated beam. ... Nlight Inc

08/03/17 / #20170222402

Flared laser oscillator waveguide

A broad area semiconductor diode laser device includes a multimode high reflector facet, a partial reflector facet spaced from said multimode high reflector facet, and a flared current injection region extending and widening between the multimode high reflector facet and the partial reflector facet, wherein the ratio of a partial reflector facet width to a high reflector facet width is n:1, where n>1. The broad area semiconductor laser device is a flared laser oscillator waveguide delivering improved beam brightness and beam parameter product over conventional straight waveguide configurations.. ... Nlight Inc

07/20/17 / #20170205623

Method of processing calibration data in 3d laser scanner systems

A method includes determining a set of pattern position errors between (i) a set of expected pattern positions of a calibration pattern on a laser target situated in a laser processing field of a laser system and produced based on a set of initial scan optic actuation corrections associated with a scan optic of the laser system and (ii) a set of measured pattern positions of the calibration pattern, determining a set of scan optic actuation rates based on the set of initial scan optic actuation corrections, and updating the set of initial scan optic actuation corrections based on the set of scan optic actuation rates and the set of pattern position errors so as to form a set of updated scan optic actuation corrections that is associated with a reduction of at least a portion of the set of pattern position errors.. . ... Nlight Inc

07/06/17 / #20170194761

Pump combiner for multi-clad fibers

Disclosed herein is a fiber pump combiner, comprising, a multi-clad fiber comprising an outer cladding layer and an inner cladding layer, a plurality of tapered trenches formed in the inner cladding layer and a plurality of pump fibers, wherein the plurality of pump fibers are tapered and fused into corresponding ones of the plurality of tapered trenches.. . ... Nlight Inc

07/06/17 / #20170194760

Fiber pump combiner

An optical fiber combiner comprising a coupling device having an input surface area, and you ain, and an output surface area, aout, wherein the input surface area ain is greater than the output surface area aout, and a plurality of optical fibers each having an input surface and an output surface, wherein the output surfaces of the plurality of optical fibers are coupled to the coupling device, wherein the coupling device combines optical power emitted by the plurality of optical fibers.. . ... Nlight Inc

07/06/17 / #20170189992

Black sub-anodized marking using picosecond bursts

A method includes generating a plurality of pulse bursts with a predetermined quantity of intra-burst pulses in each pulse burst and a temporal spacing between the intra-burst pulses, and with a pulse burst frequency, and scanning the pulse bursts across an anodized target at a scan rate so that the pulse bursts overlap at the anodized target by an amount that is above an overlap damage threshold and the intra-burst pulses provide a peak power and peak fluence that are below an ablation threshold of the anodized target so as to produce a laser mark on the anodized target with an l value of less than or equal to 30 and without a damage to an anodized layer of the anodized target.. . ... Nlight Inc

06/29/17 / #20170187160

Fully controllable burst shaping individual pulses from picosecond fiber lasers

A pulse shaper includes a seed laser situated to emit laser pulses, an amplitude modulator situated to receive one or more laser pulse bursts from the seed laser, and a pulse signal generator situated to send a seed pulse signal with a predetermined delay to the seed laser so that the seed laser emits the laser pulses in one or more laser pulse bursts at a selected frequency with each laser pulse burst having a selected number of laser pulses and a selected temporal spacing between laser pulses in the laser pulse burst and situated to send an amplitude pulse signal so that the amplitude modulator adjusts the amplitude of at least one laser pulse in each laser pulse burst.. . ... Nlight Inc

06/22/17 / #20170176758

Reverse interleaving for laser line generators

An apparatus includes beam shearing optics situated to receive a collimated beam and to shear the collimated beam along a first direction so as to form a plurality of adjacent collimated beam portions, and homogenization optics situated to receive and homogenize the adjacent collimated beam portions along at least the first direction so as to produce a homogenized output beam. A method includes shearing a collimated beam having a beam parameter product (bpp) along an axis so as to form a plurality of sheared collimated beam portions, and arranging the sheared collimated beam portions adjacent to each other so that a line beam having a length and thickness that is formed with the light from the sheared collimated beam portions has a lower bpp associated with the line beam thickness than the bpp of the collimated beam along the axis.. ... Nlight Inc

06/15/17 / #20170170629

Laser module with meniscus collimating lens

Laser module including a meniscus collimating lens. In some embodiments, a monolithic material having an index of at least 2.0 provides a concave lens surface proximal to an emission surface of the laser and a convex lens surface distal from the emission surface. ... Nlight Inc

05/18/17 / #20170141527

Fiber laser packaging

Packaging for a fiber laser includes a conduit surrounding the fiber laser and a thermally conductive compound filling a gap between the fiber laser and the conduit setting the fiber laser within the conduit. The fiber laser may have a substantially circular first cross section having a first diameter and the conduit may have a substantially circular second cross section having a second diameter larger than the first diameter of the fiber laser. ... Nlight Inc

05/18/17 / #20170139700

Multiple laser module programming over internal communications bus of fiber laser

An apparatus includes a plurality of laser system modules coupled to a communication bus that includes a module update bus, each laser system module including at least one module update port coupled to the module update bus and at least one micro controller unit (mcu) in communication with the module update port, wherein each laser system module is situated to receive a module update instruction over the module update bus based on a type identifier in a general purpose input/output (gpio) register of the at least one mcu of the corresponding laser system module that indicates a laser system module type.. . ... Nlight Inc

05/11/17 / #20170132770

Systems and methods for non-linear processing of image frames

Embodiments of the present disclosure include systems and methods for image processing for enhancing, e.g., photos, videos, and graphics representations. Particularly, some embodiments perform a histogram-based smqt decomposition of various attributes in an original image. ... Nlight Inc

05/11/17 / #20170129054

Rust free stainless steel engraving

A method includes generating at least one laser passivation pulse with process parameters selected to passivate an area of a metal target, and directing the at least one laser passivation pulse to the area in order to produce a passivation layer. Another method further includes, prior to laser passivation, generating at least one laser ablation pulse with process parameters selected to ablate metal from the area of the target, and directing the at least one laser ablation pulse to the area so as to ablate the metal and to provide the area for laser passivation.. ... Nlight Inc

03/30/17 / #20170090119

Beam parameter product (bpp) control by varying fiber-to-fiber angle

An apparatus includes a laser system that includes a first fiber having an output end and situated to propagate a first laser beam with a first beam parameter product (bpp) and a second fiber having an input end spliced to the output end of the first fiber at a fiber splice so as to receive the first laser beam and to form a second laser beam having a second bpp that is greater than the first bpp, wherein the output end of the first fiber and the input end of the second fiber are spliced at a tilt angle so as to increase the first bpp to the second bpp.. . ... Nlight Inc

02/23/17 / #20170055365

Heat spreader with optimized coefficient of thermal expansion and/or heat transfer

Methods, systems and an apparatus relating to a heat spreader to be coupled to a heat source having a heat source coefficient of thermal expansion (hs cte), the heat spreader comprising an anisotropic material having a high expansion axis. The heat spreader also including a surface to be coupled to the heat source, wherein the high expansion axis of the anisotropic material is oblique to the surface of the heat spreader and wherein the high expansion axis of the anisotropic material is oriented at a first angle of rotation about a first axis of the heat spreader wherein the first angle of rotation is selected to optimize a match of a first cte of the heat spreader with the hs cte.. ... Nlight Inc

01/12/17 / #20170010410

Spun round core fiber

Optical waveguide cores having refractive index profiles that vary angularly about a propagation axis of the core can provide single-mode operation with larger core diameters than conventional waveguides. An optical waveguide includes a core that extends along a propagation axis and has a refractive index profile that varies angularly about the propagation axis. ... Nlight Inc

01/05/17 / #20170005451

Adaptive boost control for gating picosecond pulsed fiber lasers

A method includes applying a boost pump signal to a pump laser of a laser system based on a preceding off duration associated with the laser system, and applying a forward pump signal to the pump laser. A laser system includes a seed laser situated to generate seed optical pulses, a pump laser situated to generate pump optical radiation, a fiber amplifier situated to receive the pump optical radiation and the seed optical pulses, and a controller situated to select a pump boost duration or pump boost magnitude based on an off duration associated with the laser system.. ... Nlight Inc








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