公开(公告)号：US20170288364A1

公开(公告)日：2017-10-05

申请号：US15463672

申请日：2017-03-20

Applicant: nLIGHT, Inc.

Inventor： David Martin Hemenway ,  Manoj Kanskar

IPC: H01S5/10 ,  H01S5/022 ,  H01S5/026 ,  H01S5/14 ,  H01S5/187 ,  H01S5/20 ,  H01S5/40 ,  H01S5/00 ,  H01S5/12 ,  H01S5/16

CPC classification number: H01S5/1014 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/02284 ,  H01S5/026 ,  H01S5/1003 ,  H01S5/1203 ,  H01S5/141 ,  H01S5/146 ,  H01S5/16 ,  H01S5/187 ,  H01S5/2036 ,  H01S5/4012 ,  H01S5/4031 ,  H01S2301/166 ,  H01S2301/18

Abstract: 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.

公开(公告)号：US12078788B2

公开(公告)日：2024-09-03

申请号：US17634914

申请日：2020-08-14

Applicant: nLIGHT, Inc.

Inventor： Jay Small ,  Zhigang Chen ,  Manoj Kanskar

IPC: G02B19/00 ,  G02B6/42 ,  G02B27/09 ,  G02B27/30 ,  H01S5/02315 ,  H01S5/40

CPC classification number: G02B19/0014 ,  G02B6/4206 ,  G02B19/0057 ,  G02B27/0905 ,  G02B27/30 ,  H01S5/02315 ,  H01S5/4012 ,  H01S5/4025

Abstract: Apparatus include a transmissive optical substrate configured to receive a plurality of laser beams propagating along respective parallel beam axes at respective initial beam displacements with respect to an optical axis of the transmissive optical substrate, and configured to produce laser output beams having reduced displacements, wherein the transmissive optical substrate includes first and second surfaces with respective first and second curvatures defined to increase an output beam magnification and to nonlinearly increase an output beam displacement from the optical axis for a linearly increasing input beam displacement from the optical axis.

公开(公告)号：US11982835B2

公开(公告)日：2024-05-14

申请号：US16881560

申请日：2020-05-22

Applicant: NLIGHT, INC.

Inventor： Manoj Kanskar ,  Shuang Li ,  Eric Martin ,  Jay Small ,  Jiamin Zhang

IPC: G02B6/02 ,  C03B37/012

CPC classification number: G02B6/02395 ,  C03B37/01211 ,  C03B37/01225

Abstract: 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.

公开(公告)号：US11979002B2

公开(公告)日：2024-05-07

申请号：US17093111

申请日：2020-11-09

Applicant: nLIGHT, Inc.

Inventor： Zhigang Chen ,  Manoj Kanskar ,  Shuang Li ,  Jim Zhang ,  Mark DeFranza ,  David Martin Hemenway ,  Eric Martin ,  Jay Small

IPC: H01S5/40 ,  G02B6/42 ,  H01S5/02251

CPC classification number: H01S5/4075 ,  G02B6/4296 ,  H01S5/02251

Abstract: 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.

公开(公告)号：US11641089B2

公开(公告)日：2023-05-02

申请号：US17761803

申请日：2020-09-16

Applicant: NLIGHT, INC.

Inventor： Shuang Li ,  Jiamin Zhang ,  Manoj Kanskar ,  Chendong Bai

IPC: H01S3/094 ,  H01S3/0941

Abstract: 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.

公开(公告)号：US11495942B2

公开(公告)日：2022-11-08

申请号：US16993193

申请日：2020-08-13

Applicant: NLIGHT, INC.

Inventor： Manoj Kanskar ,  Zhigang Chen ,  Nicolas Biekert

IPC: H01S5/065 ,  H01S5/22 ,  H01S5/20

Abstract: 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.

公开(公告)号：US11353650B2

公开(公告)日：2022-06-07

申请号：US16372036

申请日：2019-04-01

Applicant: nLight, Inc.

Inventor： Manoj Kanskar

IPC: G02B6/02 ,  G02B6/028 ,  H01S3/067 ,  G02B6/036 ,  G02B6/10

Abstract: 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.

公开(公告)号：US20210159673A1

公开(公告)日：2021-05-27

申请号：US17105364

申请日：2020-11-25

Applicant: nLIGHT, Inc.

Inventor： Zhigang Chen ,  David Martin Hemenway ,  Manoj Kanskar

IPC: H01S5/40 ,  H01S5/024 ,  G02B19/00 ,  H01S5/02251 ,  H01S5/02255

Abstract: 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.

公开(公告)号：US10862265B2

公开(公告)日：2020-12-08

申请号：US16154510

申请日：2018-10-08

Applicant: NLIGHT, INC.

Inventor： Manoj Kanskar ,  Johannes Boelen

IPC: H01S5/024 ,  H01S5/022 ,  H01S5/40 ,  H01S3/094 ,  H01S3/0941

Abstract: 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.

公开(公告)号：US10461505B2

公开(公告)日：2019-10-29

申请号：US15479206

申请日：2017-04-04

Applicant: nLIGHT, Inc.

Inventor： Zhigang Chen ,  Manoj Kanskar

IPC: H01S5/30 ,  H01S5/40 ,  G02B27/10 ,  G02B27/14 ,  H01S5/026 ,  H01S5/00 ,  H01S5/022

Abstract: 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.