公开(公告)号：US20220021866A9

公开(公告)日：2022-01-20

申请号：US16242939

申请日：2019-01-08

Applicant: NLIGHT, INC.

Inventor： Bodo Schmidt ,  Steve Herman

IPC: H04N13/254 ,  B60Q1/04 ,  H04N13/239

Abstract: Systems and methods for reducing or eliminating undesired effects of retro-reflections in imaging are disclosed. A system for reducing the undesired effects of retro-reflections may include an illuminator and an optical receiver. The illuminator is configured to emit an illumination signal for illuminating a scene. The optical receiver is configured to receive returned portions of the illumination signal scattered or reflected from the scene. Return signals from retroreflectors present in the scene may oversaturate or otherwise negatively affect sensors in the optical receiver. To limit return signals from retroreflectors that may be present in the scene, the illuminator and optical receiver are physically separated from each other by an offset distance that limits or prevents retro-reflections from the retroreflectors from being received by the optical receiver.

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

IPC: H01S3/067 ,  G02B6/02 ,  G02B6/24 ,  H01S5/065 ,  H01S3/10 ,  H01S3/23 ,  H01S3/094

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.

公开(公告)号：US20210226405A1

公开(公告)日：2021-07-22

申请号：US17222313

申请日：2021-04-05

Applicant: nLIGHT, Inc.

Inventor： Dahv A.V. Kliner

IPC: H01S3/094 ,  H01S3/067 ,  H01S3/0941 ,  H01S5/40

Abstract: A modular and scalable high-power fiber laser system is configurable to generate 1 kW or more of laser output, and includes one or more separable pump modules separately disposed from each other, each pump module including a plurality of fiber-coupled component pump sources optically combined by one or more fiber-based pump module pump combiners, each pump module providing one or more pump module fiber outputs, and a gain module separately disposed from the one or more separable pump modules and including one or more gain module pump fiber inputs optically coupled to corresponding ones of the pump module fiber outputs, and including a gain fiber optically coupled to the one or more gain module pump fiber inputs, the gain fiber configured to generate a gain module fiber output power scalable in relation to the number and power of said pump module fiber outputs coupled to the gain fiber.

公开(公告)号：US11009657B2

公开(公告)日：2021-05-18

申请号：US16550058

申请日：2019-08-23

Applicant: NLIGHT, INC.

Inventor： Ryan Hawke ,  Teemu Kokki ,  Shaun Hampton ,  Chris Luetjen

IPC: G02B6/036 ,  G02B6/255 ,  H01S3/067 ,  G02B6/245

Abstract: Spliced multi-clad optical fibers with a cladding light stripper (CLS) encapsulating the splice. The splice may facilitate conversion between two optical fibers having different architectures, such as different core and/or cladding dimensions. The CLS may comprise a first length of fiber on a first side of the splice, and a second length of fiber on a second side of the splice, encapsulating the splice within the lengths of the CLS. The splice may abut one or more of the lengths of the CLS, or may be separated from one or more lengths of the CLS by an intermediate length of a first and/or second fiber joined by the splice.

公开(公告)号：US10971885B2

公开(公告)日：2021-04-06

申请号：US15912034

申请日：2018-03-05

Applicant: nLIGHT, Inc.

Inventor： Dahv A. V. Kliner

IPC: H01S3/094 ,  H01S3/067 ,  H01S3/0941 ,  G02B6/43 ,  H01S5/40 ,  G01B9/02

Abstract: A modular and scalable high-power fiber laser system is configurable to generate 1 kW or more of laser output, and includes one or more separable pump modules separately disposed from each other, each pump module including a plurality of fiber-coupled component pump sources optically combined by one or more fiber-based pump module pump combiners, each pump module providing one or more pump module fiber outputs, and a gain module separately disposed from the one or more separable pump modules and including one or more gain module pump fiber inputs optically coupled to corresponding ones of the pump module fiber outputs, and including a gain fiber optically coupled to the one or more gain module pump fiber inputs, the gain fiber configured to generate a gain module fiber output power scalable in relation to the number and power of said pump module fiber outputs coupled to the gain fiber.

公开(公告)号：US20210006043A1

公开(公告)日：2021-01-07

申请号：US17024363

申请日：2020-09-17

Applicant: nLIGHT, Inc.

Inventor： David C. Dawson ,  Wolfram Urbanek ,  David Martin Hemenway

IPC: H01S5/40 ,  H01S5/024 ,  H01S5/022

Abstract: Laser diode packages include a rigid thermally conductive base member that includes a base member surface situated to support at least one laser diode assembly, at least one electrode standoff secured to the base member surface that has at least one electrical lead having a first end and a second end with the first end secured to a lead surface of the electrode standoff, and a lid member that includes a lid portion and a plurality of side portions extending from the lid portion and situated to be secured to the base member so as to define sides of the laser diode package, wherein at least one of the side portions includes a lead aperture situated to receive the second end of the secured electrical lead that is insertable through the lead aperture so that the lid member extends over the base member to enclose the laser diode package.

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

IPC: H01S5/40 ,  H01S5/022 ,  H01S5/024 ,  G02B19/00 ,  G02B6/42

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：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

IPC: H01S5/024 ,  H01S5/022 ,  H01S5/40 ,  H01S5/00

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.

公开(公告)号：US10739579B2

公开(公告)日：2020-08-11

申请号：US16388613

申请日：2019-04-18

Applicant: nLIGHT, Inc.

Inventor： Jay Small ,  Ken Gross ,  Vito P. Errico

IPC: G02B26/10 ,  G01B11/00

Abstract: A method includes determining a set of pattern position errors between (i) a set of expected pattern positions of a calibration pattern on a laser target situated in a laser processing field of a laser system and produced based on a set of initial scan optic actuation corrections associated with a scan optic of the laser system and (ii) a set of measured pattern positions of the calibration pattern, determining a set of scan optic actuation rates based on the set of initial scan optic actuation corrections, and updating the set of initial scan optic actuation corrections based on the set of scan optic actuation rates and the set of pattern position errors so as to form a set of updated scan optic actuation corrections that is associated with a reduction of at least a portion of the set of pattern position errors.

公开(公告)号：US10705348B2

公开(公告)日：2020-07-07

申请号：US15939111

申请日：2018-03-28

Applicant: nLIGHT, Inc.

Inventor： Robert J. Martinsen ,  Jacob L. Bell ,  Dahv A.V. Kliner ,  Roger L. Farrow

IPC: G02B27/09 ,  F21V8/00 ,  G02B6/14 ,  G02B6/42 ,  G02B6/036 ,  G02B6/028 ,  G02B6/26

Abstract: An optical power control system includes a laser source to provide an optical beam, a variable beam characteristics (VBC) fiber, and a controller operatively coupled to the VBC fiber and configured to control, in response to information indicating change in optical power of the optical beam, different states of perturbation so as to control optical power density.