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1. 发明授权

US11982835B2 Apparatuses for scattering light and methods of forming apparatuses for scattering light 有权
公开(公告)号：US11982835B2
公开(公告)日：2024-05-14
申请号：US16881560
申请日：2020-05-22
申请人： NLIGHT, INC.
发明人： Manoj Kanskar , Shuang Li , Eric Martin , Jay Small , Jiamin Zhang
IPC分类号： G02B6/02 , C03B37/012
CPC分类号： G02B6/02395 , C03B37/01211 , C03B37/01225
摘要： An apparatus for scattering light may include: an optical fiber having a first length; and a sleeve, having a second length shorter than the first length, around the optical fiber. The optical fiber may include: a core; and cladding around the core. The sleeve may include fiber-optic material. The fiber-optic material may be substantially polymer-free. An outer surface of the sleeve may be roughened to scatter the light out of the sleeve through the roughened surface. A method of forming an apparatus for scattering light may include: providing a sleeve having a first length, the sleeve having inner and outer surfaces; providing an optical fiber having a second length longer than the first length; passing the sleeve around the optical fiber or threading the optical fiber through the sleeve; and roughening at least a portion of the outer surface of the sleeve.

2. 发明授权

US11979002B2 Diode laser apparatus with FAC lens out-of-plane beam steering 有权
公开(公告)号：US11979002B2
公开(公告)日：2024-05-07
申请号：US17093111
申请日：2020-11-09
申请人： nLIGHT, Inc.
发明人： Zhigang Chen , Manoj Kanskar , Shuang Li , Jim Zhang , Mark DeFranza , David Martin Hemenway , Eric Martin , Jay Small
IPC分类号： H01S5/40 , G02B6/42 , H01S5/02251
CPC分类号： H01S5/4075 , G02B6/4296 , H01S5/02251
摘要： Apparatus include a first laser diode situated to emit a beam from an exit facet along an optical axis, the beam as emitted having perpendicular fast and slow axes perpendicular to the optical axis, a first fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the first laser diode, a second laser diode situated to emit a beam from an exit facet of the second laser diode along an optical axis parallel to the optical axis of the first laser diode and with a slow axis in a common plane with the slow axis of the first laser diode, and a second fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet of the second laser diode and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the second laser diode.

3. 发明授权

US11641089B2 Cladless fiber for fiber laser pump and combiner 有权
公开(公告)号：US11641089B2
公开(公告)日：2023-05-02
申请号：US17761803
申请日：2020-09-16
申请人： NLIGHT, INC.
发明人： Shuang Li , Jiamin Zhang , Manoj Kanskar , Chendong Bai
IPC分类号： H01S3/094 , H01S3/0941
摘要： Some embodiments may include a packaged laser diode assembly, comprising: a length of optical fiber having a core and a polymer buffer in direct contact with the core, the length of optical fiber having a first section and a second section, the first section of the length of optical fiber including a tip of an input end of the optical fiber, wherein the polymer buffer covers only the second section of the first and second sections; one or more laser diodes to generate laser light; means for directing a beam derived from the laser light into the input end of the length of optical fiber; a light stripper attached to the core in the first section of the length of optical fiber. Other embodiments may be disclosed and/or claimed.

4. 发明授权

US11495942B2 Method, system and apparatus for higher order mode suppression 有权
公开(公告)号：US11495942B2
公开(公告)日：2022-11-08
申请号：US16993193
申请日：2020-08-13
申请人： NLIGHT, INC.
发明人： Manoj Kanskar , Zhigang Chen , Nicolas Biekert
IPC分类号： H01S5/065 , H01S5/22 , H01S5/20
摘要： A laser diode, comprising a transverse waveguide that is orthogonal to the lateral waveguide comprising an active layer between an n-type waveguide layer and a p-type waveguide layer, wherein the transverse waveguide is bounded by an n-type cladding layer on an n-side and p-type cladding layer on a p-side and a lateral waveguide bounded in a longitudinal direction at a first end by a high reflector (HR) coated facet and at a second end by a partial reflector (PR) coated facet, the lateral waveguide further comprising a buried higher order mode suppression layer (HOMSL) disposed beneath the p-cladding within the lateral waveguide or on one or both sides of the lateral waveguide or a combination thereof, wherein the HOMSL extends in a longitudinal direction from the HR facet a length less than the distance between the HR facet and the PR facet.

5. 发明授权

US11353650B2 Single mode LMA (large mode area) fiber 有权
公开(公告)号：US11353650B2
公开(公告)日：2022-06-07
申请号：US16372036
申请日：2019-04-01
申请人： nLight, Inc.
发明人： Manoj Kanskar
IPC分类号： G02B6/02 , G02B6/028 , H01S3/067 , G02B6/036 , G02B6/10
摘要： Large mode area optical fibers include cores that are selected to be smaller than a core size associated with a minimum mode field diameter of a lowest order mode. Cross-sectional shape of such cores can be circular or annular, and a plurality of such cores can be used. Gain regions can be provided in cores or claddings, and selected to produce a selected state of polarization.

6. 发明申请

US20210159673A1 POWER AND BRIGHTNESS SCALING IN FIBER COUPLED DIODE LASERS USING DIODES WITH OPTIMIZED BEAM DIMENSIONS 有权
公开(公告)号：US20210159673A1
公开(公告)日：2021-05-27
申请号：US17105364
申请日：2020-11-25
申请人： nLIGHT, Inc.
发明人： Zhigang Chen , David Martin Hemenway , Manoj Kanskar
IPC分类号： H01S5/40 , H01S5/024 , G02B19/00 , H01S5/02251 , H01S5/02255
摘要： 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.

7. 发明授权

US10862265B2 Low size and weight, high power fiber laser pump 有权
公开(公告)号：US10862265B2
公开(公告)日：2020-12-08
申请号：US16154510
申请日：2018-10-08
申请人： NLIGHT, INC.
发明人： Manoj Kanskar , Johannes Boelen
IPC分类号： H01S5/024 , H01S5/022 , H01S5/40 , H01S3/094 , H01S3/0941
摘要： 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.

8. 发明授权

US10461505B2 High brightness coherent multi-junction diode lasers 有权
公开(公告)号：US10461505B2
公开(公告)日：2019-10-29
申请号：US15479206
申请日：2017-04-04
申请人： nLIGHT, Inc.
发明人： Zhigang Chen , Manoj Kanskar
IPC分类号： H01S5/30 , H01S5/40 , G02B27/10 , G02B27/14 , H01S5/026 , H01S5/00 , H01S5/022
摘要： 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. The phase-corrected beams propagate with reduced angular divergence than conventional lasers that are not coherently coupled, and the coherently coupled laser diodes can provide higher beam brightness, enhanced beam parameter product, and superior power coupled into doped fibers in fiber lasers.

9. 发明申请

US20190302354A1 SINGLE MODE LMA (LARGE MODE AREA) FIBER 审中-公开
公开(公告)号：US20190302354A1
公开(公告)日：2019-10-03
申请号：US16372036
申请日：2019-04-01
申请人： nLIGHT, Inc.
发明人： Manoj Kanskar
IPC分类号： G02B6/02 , G02B6/028 , G02B6/10 , G02B6/036 , H01S3/067
摘要： Large mode area optical fibers include cores that are selected to be smaller than a core size associated with a minimum mode field diameter of a lowest order mode. Cross-sectional shape of such cores can be circular or annular, and a plurality of such cores can be used. Gain regions can be provided in cores or claddings, and selected to produce a selected state of polarization.

10. 发明授权

US10270224B2 Angled DBR-grating laser/amplifier with one or more mode-hopping regions 有权
公开(公告)号：US10270224B2
公开(公告)日：2019-04-23
申请号：US15579109
申请日：2016-06-06
申请人： NLIGHT, INC.
发明人： Manoj Kanskar
IPC分类号： H01S5/125 , H01S5/10 , H01S5/0625
摘要： 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.

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