公开(公告)号：WO2021102187A1

公开(公告)日：2021-05-27

申请号：PCT/US2020/061363

申请日：2020-11-19

Applicant: NLIGHT, INC.

Inventor： SMALL, Jay ,  LI, Shuang ,  KLINER, Dahv, A.V.

IPC: G02B6/028

Abstract: Angularly homogenizing gradient index optical fiber having a refractive index profile that is non-quadratic to a degree sufficient to enhance precession of light as it is propagated through the fiber. Deviation from the quadratic may be limited to avoid profoundly changing the radial boundary within the fiber. Beam asymmetry, for example, associated with small aperture sources launched into a fiber off axis, may be made more symmetric as the beam is propagated through the homogenizing gradient index optical fiber. A refractive index profile may be manufactured to avoid a pure quadratic profile, or a fiber having a refractive index profile that is quadratic in only some orientations about the fiber axis may be twisted during draw to induce a refractive index profile path that enhances propagation precession.

公开(公告)号：WO2018217307A1

公开(公告)日：2018-11-29

申请号：PCT/US2018/024971

申请日：2018-03-28

Applicant: NLIGHT, INC.

Inventor： KOPONEN, Joona ,  BROWN, Aaron ,  SHEEHAN, Lynn ,  KLINER, Dahv, A.V. ,  FARROW, Roger

IPC: H01S3/10 ,  A61B5/06

Abstract: An optical beam delivery device, such as an optical fiber, includes: a first length of fiber having a first refractive index profile (RIP) to enable modification of one or more beam characteristics of an optical beam having a first wavelength; and a second length of fiber having at least one wavelength-modifying confinement region and situated to receive the optical beam from the first length of fiber.

公开(公告)号：WO2018217247A1

公开(公告)日：2018-11-29

申请号：PCT/US2018/016305

申请日：2018-01-31

Applicant: NLIGHT, INC.

Inventor： VICTOR, Brian ,  MARTINSEN, Robert ,  SHEEHAN, Lynn ,  FARROW, Roger ,  KLINER, Dahv, A.V.

IPC: B23K26/03 ,  B23K26/064 ,  G02B27/09 ,  B23K26/21 ,  B23K26/342 ,  B22F3/105 ,  B22F3/11 ,  B22F3/24

Abstract: The present application relates to a method of forming an article includes the step (2901) of forming a melt pool; the step (2903) of exposing the melt poof to an optical beam having at least one beam characteristic, the step (2905) of forming a keyhole cavity in the melt pool, the keyhole cavity having at least one keyhole cavity property; and the step (2906) of modifying the at least one beam characteristic in response to a change in the keyhole cavity property.

公开(公告)号：WO2017161334A8

公开(公告)日：2017-09-21

申请号：PCT/US2017/023067

申请日：2017-03-17

Applicant: NLIGHT, INC.

Inventor： HEMENWAY, David, Martin ,  DAWSON, David, C. ,  URBANEK, Wolfram ,  FARROW, Roger, L. ,  KLINER, Dahv, A.V.

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/102 ,  H01S3/23 ,  H01S5/40 ,  G02B19/00

Abstract: A method of spectrally multiplexing diode pump modules to increase brightness includes generating one or more pump beams from respective diode lasers at a first wavelength in a diode laser package, generating one or more pump beams from respective diode lasers at a second wavelength different from the first wavelength in the diode laser package, wavelength combining at least one of the pump beams at the first wavelength with at least one of the pump beams at the second wavelength to form one or more combined pump beams, and receiving the combined pump beams in a pump fiber coupled to the diode laser package. Laser systems can include multi- wavelength pump modules and a gain fiber having a core actively doped so as to have an absorption spectrum corresponding to the multiple wavelength, the gain fiber situated to receive the pump light and to produce an output beam at an output wavelength.

公开(公告)号：WO2018217308A1

公开(公告)日：2018-11-29

申请号：PCT/US2018/024974

申请日：2018-03-28

Applicant: NLIGHT, INC.

Inventor： VICTOR, Brian ,  BELL, Jacob, L. ,  KLINER, Dahv, A.V. ,  FARROW, Roger

IPC: G02B6/43 ,  H01S3/10

Abstract: An optical beam delivery system, includes: an optical beam source; a fiber assembly situated to receive and modify one or more beam characteristics of an optical beam; and a nonlinear frequency-conversion stage in optical communication with the fiber assembly and situated to receive and frequency-convert an optical beam from a first wavelength to one or more second wavelengths. The fiber assembly includes: a first length of fiber comprising a first RIP formed to enable modification of the one or more beam characteristics of the optical beam by a perturbation device, and a second length of fiber having a second RIP coupled to the first length of fiber, the second RIP formed to confine at least a portion of modified beam characteristics of the optical beam within one or more confinement regions. The first RIP and the second RIP are different.

公开(公告)号：WO2018217277A1

公开(公告)日：2018-11-29

申请号：PCT/US2018/022629

申请日：2018-03-15

Applicant: NLIGHT, INC.

Inventor： KARLSEN, Scott ,  MARTINSEN, Robert ,  KLINER, Dahv, A.V. ,  FARROW, Roger

IPC: B22F3/105 ,  G02B27/09 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B22F3/1055 ,  B22F2003/1057 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/14 ,  G02B26/101 ,  G02B26/103 ,  G02B27/09 ,  G02B27/0927 ,  G02B27/0994

Abstract: An apparatus for heat deposition in additive manufacturing may include: a first optical beam source configured to generate a first optical beam; a second optical beam source configured to generate a second optical beam; and/or an optical system. The optical system may be configured to move the generated first optical beam over a target area. The optical system may be further configured to move the generated second optical beam over the target area so that a path of the second optical beam moving over the target area is dithered about a path of the first optical beam moving over the target area. The optical system may be configured to focus the generated first optical beam at a plane of a target area. The optical system may be further configured to focus the generated second optical beam at the plane of the target area.

公开(公告)号：WO2018039501A3

公开(公告)日：2018-03-01

申请号：PCT/US2017/048500

申请日：2017-08-24

Applicant: NLIGHT, INC. ,  RIVERA, Chris, A. ,  KLINER, Dahv, A.V. ,  EMERY, Joseph

Inventor： RIVERA, Chris, A. ,  KLINER, Dahv, A.V. ,  EMERY, Joseph

IPC: H01S3/23 ,  B23K26/06 ,  H01S3/00 ,  G02B6/35

Abstract: An apparatus includes a plurality of input fibers including one or more signal fibers and one or more beam dump fibers, a signal combiner having an input end coupled to the plurality of input fibers so as to couple portions of one or more signal beams respectively propagating in one or more of the signal fibers to form a combiner beam, an output fiber coupled to an output end of the signal combiner so as to receive the combiner beam, and a beam dump coupled to at least one of the one or more beam dump fibers so as to receive a light beam propagating from the output fiber that is associated with the combiner beam.

公开(公告)号：WO2018039498A3

公开(公告)日：2018-03-01

申请号：PCT/US2017/048497

申请日：2017-08-24

Applicant: NLIGHT, INC. ,  RIVERA, Chris, A. ,  KLINER, Dahv, A.V. ,  EMERY, Joseph

Inventor： RIVERA, Chris, A. ,  KLINER, Dahv, A.V. ,  EMERY, Joseph

IPC: G02B6/036 ,  H01S3/067

Abstract: Beam combining optical systems include a fiber beam combiner having multiple inputs to which output fibers of laser diode sources are spliced. Cladding light stripping regions are situated at the splices, and include exposed portions of fiber claddings that are at least partially encapsulated with an optical adhesive or a polymer. A beam combiner fiber that is optically downstream of a laser source has an exposed cladding secured to a thermally conductive support with a polymer or other material that is index matched to the exposed cladding. This construction permits attenuation of cladding light propagating toward a beam combiner from a splice.

公开(公告)号：WO2023048920A1

公开(公告)日：2023-03-30

申请号：PCT/US2022/042249

申请日：2022-08-31

Applicant: NLIGHT, INC.

Inventor： KARLSEN, Scott, R. ,  KLINER, Dahv, A.V.

IPC: H01S3/117 ,  H01S3/067 ,  G02F1/11

Abstract: Some embodiments may include an imaging optic having a first end to receive laser light, an exterior, and a second end; an acoustic transmitter acoustically coupled to a first side of the exterior of the imaging optic; an acoustic absorber acoustically coupled to a second opposite side of the exterior of the imaging optic; a waveguide having a first end to receive an output from the second end of the imaging optic, a first core section, a second section, and a second end, wherein acoustic waves output from the acoustic transmitter are arranged to diffract a first order beam from the laser light in the imaging optic; wherein the first order light is selectively output from the second end of the imaging optic into one of the sections of the waveguide. Other embodiments may be disclosed and/or claimed.

公开(公告)号：WO2020247673A1

公开(公告)日：2020-12-10

申请号：PCT/US2020/036180

申请日：2020-06-04

Applicant: NLIGHT, INC.

Inventor： KLINER, Dahv, A.V. ,  FANNING, C., Geoffrey

IPC: H01S3/067 ,  H01S3/0933

Abstract: A laser assembly comprising a multi-clad fiber optically coupled to a light source configured to emit optical radiation at a first wavelength and a protective element disposed between the light source and the multi-clad fiber so as to prevent a portion of backward- propagating optical radiation at a second wavelength from coupling into the light source.