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    HIGH BRIGHTNESS FIBER COUPLED DIODE LASERS WITH CIRCULARIZED BEAMS
    44.
    发明申请
    HIGH BRIGHTNESS FIBER COUPLED DIODE LASERS WITH CIRCULARIZED BEAMS 有权

    公开(公告)号：US20220385043A1

    公开(公告)日：2022-12-01

    申请号：US17634912

    申请日：2020-08-14

    Applicant: nLIGHT, Inc.

    Inventor： Zhigang Chen ,  Jay Small ,  Manoj Kanskar

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

    Abstract: Apparatus include a plurality of laser diodes configured to emit respective laser diode beams having perpendicular fast and slow beam divergence axes mutually perpendicular to respective beam axes, and beam shaping optics configured to receive the laser diode beams and to circularize an ensemble image space and NA space of the laser diode beams at an ensemble coupling plane. In selected examples, beam shaping optics include variable fast axis telescopes configured to provide variable fast axis magnification and beam displacement.

    VARIABLE MAGNIFICATION AFOCAL TELESCOPE ELEMENT
    45.
    发明申请
    VARIABLE MAGNIFICATION AFOCAL TELESCOPE ELEMENT 有权

    公开(公告)号：US20220382028A1

    公开(公告)日：2022-12-01

    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

    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.

    DIODE LASER APPARATUS WITH FAC LENS OUT-OF-PLANE BEAM STEERING
    46.
    发明申请
    DIODE LASER APPARATUS WITH FAC LENS OUT-OF-PLANE BEAM STEERING 有权

    公开(公告)号：US20210126435A1

    公开(公告)日：2021-04-29

    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 ,  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.

    Tandem pumped fiber laser or fiber amplifier
    47.
    发明授权
    Tandem pumped fiber laser or fiber amplifier 有权

    公开(公告)号：US10951001B2

    公开(公告)日：2021-03-16

    申请号：US15868903

    申请日：2018-01-11

    Applicant: NLIGHT, INC.

    Inventor： Manoj Kanskar

    IPC: H01S3/23 ,  H01S3/067 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/094 ,  H01S3/00

    Abstract: 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.

    Method, system and apparatus for higher order mode suppression
    48.
    发明授权
    Method, system and apparatus for higher order mode suppression 有权

    公开(公告)号：US10777968B2

    公开(公告)日：2020-09-15

    申请号：US15796355

    申请日：2017-10-27

    Applicant: nLIGHT, Inc.

    Inventor： Manoj Kanskar ,  Zhigang Chen

    IPC: H01S5/065 ,  H01S5/20 ,  H01S5/10 ,  H01S5/042 ,  H01S5/026 ,  H01S5/028 ,  H01S5/12 ,  H01S5/22 ,  H01S5/34

    Abstract: 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.

    Low swap laser pump diode module and laser amplifier incorporating the same
    49.
    发明授权
    Low swap laser pump diode module and laser amplifier incorporating the same 有权

    公开(公告)号：US10243320B2

    公开(公告)日：2019-03-26

    申请号：US15968139

    申请日：2018-05-01

    Applicant: NLIGHT, INC.

    Inventor： Manoj Kanskar ,  Johannes Boelen

    IPC: H01S5/02 ,  H01S5/024 ,  H01S5/022 ,  H01S3/0941 ,  H01S3/04 ,  H01S3/094

    Abstract: Disclosed herein are Low Size Weight and Power efficient Laser Diode pump modules and High Power Fiber Amplifiers incorporating such pump modules for amplifying laser light produced by a seed laser. The pump modules are configured for forced fluid cooling, and are provided with cooling channels that allow for varying combinations of a coolant mass flow rate F of the coolant, a pressure drop P of the coolant, and a steady state temperature T of the laser diodes in the pump modules, uniquely and significantly, and thereby allowing for optimizing such variables for a particular application.

    Low size and weight, high power fiber laser pump
    50.
    发明授权
    Low size and weight, high power fiber laser pump 有权

    公开(公告)号：US10109978B2

    公开(公告)日：2018-10-23

    申请号：US15498422

    申请日：2017-04-26

    Applicant: NLIGHT, INC.

    Inventor： Manoj Kanskar ,  Johannes Boelen

    IPC: H01S5/00 ,  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.

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