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公开(公告)号：US20190302354A1
公开(公告)日：2019-10-03
申请号：US16372036
申请日：2019-04-01
Applicant: nLIGHT, Inc.
Inventor： Manoj Kanskar
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.
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公开(公告)号：US10270224B2
公开(公告)日：2019-04-23
申请号：US15579109
申请日：2016-06-06
Applicant: NLIGHT, INC.
Inventor： Manoj Kanskar
IPC: H01S5/125 , H01S5/10 , H01S5/0625
Abstract: 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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公开(公告)号：US20190097377A1
公开(公告)日：2019-03-28
申请号：US16200462
申请日：2018-11-26
Applicant: NLIGHT, INC.
Inventor： Manoj Kanskar , Jiamin Zhang
Abstract: In an example, a tandem pumped fiber amplifier may include a seed laser, one or more diode pumps, and a single or plural active core fiber. The single or plural active core fiber may include a first section to operate as an oscillator and a second different section to operate as a power amplifier. The one or more diode pumps may be optically coupled to the first section of the single or plural active core fiber, and the seed laser may be optically coupled to the single active core or an innermost core of the plural active core fiber.
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公开(公告)号：US20170222402A1
公开(公告)日：2017-08-03
申请号：US15377813
申请日：2016-12-13
Applicant: nLIGHT, Inc.
Inventor： Manoj Kanskar
CPC classification number: H01S5/2036 , H01S5/0287 , H01S5/0651 , H01S5/1003 , H01S5/1014 , H01S5/1203 , H01S5/2018 , H01S5/22 , H01S2301/16 , H01S2301/18
Abstract: 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.
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公开(公告)号：US12158570B2
公开(公告)日：2024-12-03
申请号：US17634912
申请日：2020-08-14
Applicant: nLIGHT, Inc.
Inventor： Zhigang Chen , Jay Small , Manoj Kanskar
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.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20220368108A1
公开(公告)日：2022-11-17
申请号：US17761188
申请日：2020-09-15
Applicant: NLIGHT, INC.
Inventor： Zhigang Chen , Manoj Kanskar
Abstract: Some embodiments may include a laser diode having a strain-engineered cladding layer for optimized active region strain and improved laser diode performance. In one embodiment, the laser diode may include a semiconductor substrate having a material composition with a first lattice constant; and a plurality of epitaxy layers form on the semiconductor substrate, with plurality of epitaxy layers including a waveguide layer and cladding layers, wherein the waveguide layer includes an active region having a material composition associated with a target optical wavelength, wherein a second lattice constant of the material composition of the active region is different than the first lattice constant; wherein a material composition and/or thickness of an individual cladding layer of the cladding layers is/are arranged to impart a target stress field on the active region to optimize active region strain. Other embodiments may be disclosed and/or claimed.
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公开(公告)号：US20220352694A1
公开(公告)日：2022-11-03
申请号：US17761466
申请日：2020-09-10
Applicant: NLIGHT. INC.
Inventor： Jiamin ZHANG , Shuang Li , Manoj Kanskar
IPC: H01S5/40 , H01S5/02251 , H01S5/14 , G02B6/42
Abstract: Some embodiments may include a packaged laser diode assembly, comprising: a length of optical fiber having a core and a cladding layer, 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; one or more laser diodes to generate laser light; one or more optical components to direct a beam derived from the laser light into the input end of the length of optical fiber; a clad light stripper on the second section of the length of optical fiber; wherein, in the first section of the length of optical fiber, the cladding layer includes: a light scattering feature at the tip of the input end of the optical fiber and/or a void along a length of the optical fiber.
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公开(公告)号：US11211765B2
公开(公告)日：2021-12-28
申请号：US16200462
申请日：2018-11-26
Applicant: NLIGHT, INC.
Inventor： Manoj Kanskar , Jiamin Zhang
Abstract: In an example, a tandem pumped fiber amplifier may include a seed laser, one or more diode pumps, and a single or plural active core fiber. The single or plural active core fiber may include a first section to operate as an oscillator and a second different section to operate as a power amplifier. The one or more diode pumps may be optically coupled to the first section of the single or plural active core fiber, and the seed laser may be optically coupled to the single active core or an innermost core of the plural active core fiber.
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29.发明授权公开(公告)号：US10855056B2
公开(公告)日：2020-12-01
申请号：US15867540
申请日：2018-01-10
Applicant: nLIGHT, Inc.
Inventor： Zhigang Chen , David Martin Hemenway , Manoj Kanskar
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.
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公开(公告)号：US10763640B2
公开(公告)日：2020-09-01
申请号：US15961750
申请日：2018-04-24
Applicant: nLIGHT, Inc.
Inventor： Manoj Kanskar , Mark DeFranza
Abstract: Apparatus include a conductive block including a base surface and a plurality of parallel stepped surfaces opposite the base surface and defining respective mounting surfaces situated to receive respective laser diodes having respective thermal paths defining a common thermal path distance from the mounting surfaces to the base surface, and a two-phase cooling unit including a coupling surface attached to the base surface of the conductive block and wherein the two-phase cooling unit is situated to conduct heat generated through the emission of laser beams from the laser diodes along the thermal paths.
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