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公开(公告)号：US10916908B2
公开(公告)日：2021-02-09
申请号：US16711174
申请日：2019-12-11
Applicant: NLIGHT, INC.
Inventor： Dahv A. V. Kliner , Roger L. Farrow
Abstract: 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.
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公开(公告)号：US10901162B2
公开(公告)日：2021-01-26
申请号：US16417337
申请日：2019-05-20
Applicant: nLIGHT, Inc.
Inventor： Dahv A. V. Kliner
Abstract: 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.
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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.
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公开(公告)号：US10784645B2
公开(公告)日：2020-09-22
申请号：US16299049
申请日：2019-03-11
Applicant: NLIGHT, INC.
Inventor： Aaron Ludwig Hodges , Nicolas Meacham , Dahv Kliner , Mitchell Ryan Reynolds
IPC: H01S3/30 , H01S3/067 , H01S3/04 , H01S3/042 , H01S3/0941
Abstract: Some embodiments may include a fiber laser, comprising: a variably wound optical fiber, wherein the variably wound optical fiber includes: a first length arranged in a plurality of first loops with a first separation distance between successive ones of the first loops; and a second length arranged in a plurality of second loops with a second separation distance between successive ones of the second loops; wherein the first separation distance between successive ones of the first loops is greater than the second separation distance between successive ones of the second loops; and packaging to remove heat generated by the optical fiber of the fiber laser during operation of the fiber laser, wherein the variably wound optical fiber is fixably mounted to a surface of a heat conductor of the packaging.
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公开(公告)号：US20200292806A1
公开(公告)日：2020-09-17
申请号：US16817450
申请日：2020-03-12
Applicant: NLIGHT, INC.
IPC: G02B26/10
Abstract: Some embodiments may include a method assessing whether a dynamic focus module in a three axis galvanometric scanning system (three-axis GSS) is associated with a focus calibration error. The method may include identifying a reference layer associated with a surface of the work piece and positive and negative offset distances each a difference distance above or below the reference layer, respectively, and selecting a target pattern based on the offset distances, wherein the pattern includes an individual line for each offset distance. The method may include commanding the three-axis GSS to draw the target pattern on the work piece, and then assessing whether the dynamic focus module is associated with the focus calibration error by correlating laser marking artifacts on the work piece to ones of the individual lines of the selected pattern. Other embodiments may be disclosed and/or claimed.
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Patent Agency Ranking
公开(公告)号：US10768433B2
公开(公告)日：2020-09-08
申请号：US15276589
申请日：2016-09-26
Applicant: nLIGHT, Inc.
Inventor： David Logan , Ryan Hawke , David R. Balsley , Ron Stevens
Abstract: 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.
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公开(公告)号：US10761276B2
公开(公告)日：2020-09-01
申请号：US15154663
申请日：2016-05-13
Applicant: nLIGHT, Inc.
Inventor： David Martin Hemenway , Aaron Brown , David C. Dawson , Kylan Hoener , Shelly Lin , Wolfram Urbanek
Abstract: A cross-cylinder objective assembly includes a fast axis objective (FAO) situated along an optical axis for focusing an incident laser beam along a fast axis, a slow axis objective (SAO) situated along the optical axis for focusing the incident laser beam along a slow axis, and a lens cell having fast and slow axis objective receiving portions for registering the FAO and SAO at a predetermined spacing along the optical axis.
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公开(公告)号：US10739621B2
公开(公告)日：2020-08-11
申请号：US15938790
申请日：2018-03-28
Applicant: nLIGHT, Inc.
Inventor： Brian Victor , Christopher A. Rivera , Dahv A.V. Kliner , Roger Farrow
IPC: G02F1/01 , G02B27/09 , B23K26/064 , G02B6/14 , G02B6/12 , G02B6/036 , G02B6/42 , G02B6/26 , G02B6/028
Abstract: 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. The modifying of the one or more beam characteristics can include changing the one or more beam characteristics from a first state to a second state. The first state can differ from the second state.
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公开(公告)号：US10732439B2
公开(公告)日：2020-08-04
申请号：US15939064
申请日：2018-03-28
Applicant: nLIGHT, Inc.
Inventor： Dahv A. V. Kliner , Roger L. Farrow
IPC: G02F1/01 , B23K26/067 , G02B6/26 , G02B27/09 , G02B6/42 , G02B6/14 , G02B6/12 , G02B6/036 , G02B6/028
Abstract: 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.
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公开(公告)号：US20200220314A1
公开(公告)日：2020-07-09
申请号：US16820556
申请日：2020-03-16
Applicant: nLIGHT, Inc.
Inventor： Michael C. Nelson
Abstract: A burst logging system logs and transmits to a local or remote computing system event data related to errors in and or potential failures of laser system components. The system further provides for capturing data at different rates from different sensors, synchronization of data capture associated with system events and the possibility for aggregation of data from multiple systems, which can in turn be leveraged to predict and or remediate future system events.
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