Patents by Inventor Dahv A. V. Kliner

Dahv A. V. Kliner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11886052
    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.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: January 30, 2024
    Assignee: nLIGHT, Inc
    Inventors: Dahv A. V. Kliner, Roger Farrow
  • Patent number: 11886053
    Abstract: A method of processing by controlling one or more beam characteristics of an optical beam may include: 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 and one or more confinement regions; modifying the 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; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length 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 may differ from the second RIP.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: January 30, 2024
    Assignee: NLIGHT, INC.
    Inventors: Ken Gross, Brian Victor, Robert J. Martinsen, Dahv A. V. Kliner, Roger Farrow
  • Patent number: 11858842
    Abstract: Fiber bending mechanisms vary beam characteristics by deflecting or bending one or more fibers, by urging portions of one or more fibers toward a fiber shaping surface having a selectable curvature, or by selecting a fiber length that is to be urged toward the fiber shaping surface. In some examples, a fiber is secured to a flexible plate to conform to a variable curvature of the flexible plate. In other examples, a variable length of a fiber is pulled or pushed toward a fiber shaping surface, and the length of the fiber or a curvature of the flexible plate provide modification of fiber beam characteristics.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: January 2, 2024
    Assignee: NLIGHT, INC.
    Inventors: Aaron Brown, Aaron Ludwig Hodges, Dahv A. V. Kliner
  • Patent number: 11831121
    Abstract: Some embodiments may include a fiber laser including two or more input fibers and an output fiber to deliver a beam to a workpiece, the fiber laser comprising. The fiber laser may include a combiner having ends and a length, wherein the combiner is arranged to release, from its length, a portion of back-reflected light received from the output fiber at an output end of the ends from the combiner, the combiner including: a capillary tube to enclose part of the two or more input fibers at an input end of the ends of the combiner, the capillary tube having ends and a length located between the ends of the capillary tube; and a cladding light stripper (CLS) defined by part of the length of the capillary tube, wherein the CLS provides the release of the portion of the back-reflected light. Other embodiments may be disclosed and/or claimed.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: November 28, 2023
    Assignee: NLIGHT, INC.
    Inventors: Juan Carlos Lugo, Teemu Kokki, Roger Farrow, Dahv A. V. Kliner
  • Publication number: 20230359051
    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.
    Type: Application
    Filed: November 19, 2020
    Publication date: November 9, 2023
    Applicant: NLIGHT, INC.
    Inventors: Jay SMALL, Shuang LI, Dahv A.V. KLINER
  • Patent number: 11811186
    Abstract: An apparatus includes an optical gain fiber having a core, a cladding surrounding the core, the core and cladding defining an optical gain fiber numerical aperture, and a multimode fiber having a core with a larger radius than a radius of the optical gain fiber core, a cladding surrounding the core, the core and cladding of the multimode fiber defining a multimode fiber stable numerical aperture that is larger than the optical gain fiber numerical aperture, the multimode fiber being optically coupled to the optical gain fiber so as to receive an optical beam propagating in the optical gain fiber and to stably propagate the received optical beam in the multimode fiber core with low optical loss associated with the optical coupling.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: November 7, 2023
    Assignee: NLIGHT, INC.
    Inventors: Roger L. Farrow, Dahv A. V. Kliner
  • Publication number: 20230349754
    Abstract: Some embodiments may include a power monitor to measure power of laser light propagating in a core of an optical fiber; the power monitor to generate a sensor signal using an optical sensor having a light sensitive section with no line of sight to part of the optical fiber; wherein the sensor signal is derived from light emerging laterally from the part of the optical fiber. Other embodiments may be disclosed and/or claimed.
    Type: Application
    Filed: April 24, 2023
    Publication date: November 2, 2023
    Applicant: NLIGHT, INC.
    Inventors: Scott R. Karlsen, David R. Balsley, Nicolas Trent Meacham, Austin Hagarty, Dahv A.V. Kliner
  • Publication number: 20230106619
    Abstract: Disclosed is an optical fiber-based divergence-limiting device for limiting divergence from a first maximum divergence of input light to a second maximum divergence of output light, in which the second maximum divergence is less than the first maximum divergence.
    Type: Application
    Filed: January 21, 2021
    Publication date: April 6, 2023
    Applicant: nLIGHT, Inc.
    Inventors: Roger L. FARROW, Dahv A.V. KLINER, Tyson L. LOWDER
  • Publication number: 20230074977
    Abstract: Disclosed are embodiments for multi-band pumping of a doped fiber source. The doped fiber source has a first absorption band and a second absorption band that is different from the first absorption band. In some embodiments, a first laser pump generates a first pump power in a first pump band corresponding to the first absorption band that is generated. A second laser pump generates a second pump power in a second pump band corresponding to the second absorption band. The second pump band is different from the first pump band. The first and second pump power is simultaneously applied to the doped fiber source.
    Type: Application
    Filed: January 29, 2021
    Publication date: March 9, 2023
    Applicant: nLIGHT, Inc.
    Inventors: Tyson L. Lowder, Dahv A.V. Kliner
  • Publication number: 20230036091
    Abstract: Some embodiments may include a fiber laser including two or more input fibers and an output fiber to deliver a beam to a workpiece, the fiber laser comprising. The fiber laser may include a combiner having ends and a length, wherein the combiner is arranged to release, from its length, a portion of back-reflected light received from the output fiber at an output end of the ends from the combiner, the combiner including: a capillary tube to enclose part of the two or more input fibers at an input end of the ends of the combiner, the capillary tube having ends and a length located between the ends of the capillary tube; and a cladding light stripper (CLS) defined by part of the length of the capillary tube, wherein the CLS provides the release of the portion of the back-reflected light. Other embodiments may be disclosed and/or claimed.
    Type: Application
    Filed: January 28, 2021
    Publication date: February 2, 2023
    Applicant: NLIGHT, INC.
    Inventors: Juan Carlos LUGO, Teemu KOKKI, Roger FARROW, Dahv A.V. KLINER
  • Publication number: 20220404648
    Abstract: A method of processing by controlling one or more beam characteristics of an optical beam may include: 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 and one or more confinement regions; modifying the 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; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length 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 may differ from the second RIP.
    Type: Application
    Filed: June 30, 2022
    Publication date: December 22, 2022
    Applicant: NLIGHT, INC.
    Inventors: Ken GROSS, Brian VICTOR, Robert J. MARTINSEN, Dahv A.V. KLINER, Roger FARROW
  • Patent number: 11531163
    Abstract: A fiber connector, comprising a housing comprising a region extending in a lengthwise direction an optical fiber disposed in the region, a first portion of the optical fiber comprising an inner core, a cladding layer surrounding the core, and a first outer polymer layer surrounding the cladding layer and a second portion of the optical fiber comprising the inner core, the cladding layer surrounding the core and a second outer polymer layer that is different from the first polymer layer.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: December 20, 2022
    Assignee: NLIGHT, INC.
    Inventor: Dahv A. V. Kliner
  • Publication number: 20220337023
    Abstract: Systems and methods for temporal amplitude modulation of an optical beam. An exemplary system may include a birefringent fiber positioned between two polarizers, or between a polarized input light source and an output polarizer. Light may enter the birefringent fiber as linearly polarized. Depending on birefringence and orientation of the birefringent fiber, the polarization state changes as the light propagates through the birefringent fiber. This changed polarization state then enters the output polarizer, for which transmission is a function of the polarization state and the relative orientation of the polarization axis. The polarization state emerging from the birefringent fiber may be changed by modulating the fiber birefringence, for example through application of an external stress. Net transmittance of the system may be varied according to a magnitude of an external force (e.g., pressure) to some or all of the birefringent fiber.
    Type: Application
    Filed: August 5, 2020
    Publication date: October 20, 2022
    Applicant: nLIGHT, Inc.
    Inventor: Dahv A.V. Kliner
  • Publication number: 20220241859
    Abstract: Disclosed are techniques for generating a laser output beam having a functionally homogenized intensity distribution. According to some embodiments, a population of few modes in a multi-mode confinement core is excited by application of a low-moded source beam to the multi-mode confinement core, such that the population exhibit an unstable intensity distribution. The unstable intensity distribution is functionally homogenized by providing one or both of modulation of phase displacement in the multi-mode confinement core and variation of launch conditions of the low-moded source beam into the multi-mode confinement core.
    Type: Application
    Filed: June 24, 2020
    Publication date: August 4, 2022
    Applicant: nLIGHT, Inc.
    Inventors: Juan Lugo, Aaron W. Brown, Jay Small, Robert J. Martinsen, Dahv A.V. Kliner
  • Publication number: 20220221663
    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.
    Type: Application
    Filed: June 4, 2020
    Publication date: July 14, 2022
    Applicant: NLIGHT, INC.
    Inventors: Dahv A.V. KLINER, C. Geoffrey FANNING
  • Publication number: 20220123517
    Abstract: Signal combined optical fiber devices, systems, and methods for reducing signal spectrum pumping of Raman spectrum. Power of a Raman component in an output of a signal combined fiber laser system may be reduced by diversifying peak signal wavelengths across a plurality of signal generation and/or amplification modules that are input into a signal combiner. In some examples, fiber laser oscillators that are to have their output signals combined to reach a desired cumulative system output power are tuned to output signal bands of sufficiently different wavelengths that signal from separate ones of the oscillators do not collectively pump a single Raman band. With the combined signal component comprising different peak signal wavelengths, the Raman component of combined output may have multiple peak wavelengths and significantly lower power than in systems where signals of substantially the same signal peak wavelength are combined.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 21, 2022
    Applicant: nLIGHT, Inc.
    Inventors: Tyson L. Lowder, Dahv A.V. Kliner, C. Geoffrey Fanning
  • Publication number: 20220094134
    Abstract: Apparatus include a first optical fiber including a core situated to propagate a signal beam at a signal wavelength and an unwanted stimulated Raman scattering (SRS) beam at an SRS wavelength associated with the signal wavelength, and a fiber Bragg grating (FBG) situated in a core of a second optical fiber optically coupled to the core of the first optical fiber, the FBG having a selected grating reflectivity associated with the SRS wavelength and being situated to reflect the SRS beam back along the core of the second optical fiber and to reduce a damage associated with propagation of the SRS beam to power sensitive laser system components optically coupled to the second optical fiber. Methods are also disclosed.
    Type: Application
    Filed: December 31, 2019
    Publication date: March 24, 2022
    Applicant: nLIGHT, Inc.
    Inventors: C. Geoffrey Fanning, Jay Small, Dahv A.V. Kliner, Chris A. Rivera
  • Publication number: 20220094130
    Abstract: Optical fiber devices, systems, and methods for separating Raman spectrum from signal spectrum. Once separated, the Raman spectrum may be suppressed (e.g., as a result of a reduction in gain from the signal spectrum, and/or through dissipation of the Raman spectrum energy), while the signal spectrum may be propagated in one or more guided modes of a fiber system. In some embodiments, a fiber system may include a chirped fiber Bragg grating (CFBG) or a long period fiber grating (LPFG), each configured to couple a core propagation mode into a cladding propagation mode with an efficiency that is higher for Raman spectrum than for signal spectrum. A fiber system further may include a cladding light stripper (CLS) configured to preferentially remove cladding modes containing the Raman component.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 24, 2022
    Applicant: nLIGHT, Inc.
    Inventors: Tyson L. Lowder, Dahv A.V. Kliner, C. Geoffrey Fanning
  • Publication number: 20220085567
    Abstract: Fiber laser devices, systems, and methods for reducing Raman spectrum in emissions from a resonant cavity. A fiber laser oscillator that is to generate an optical beam may include a Raman reflecting output coupler that strongly reflects a Raman component pumped within the resonant cavity, and partially reflects a signal component to sustain the oscillator and emit a signal that has a reduced Raman component. A Raman filtering output coupler may comprise a superstructure fiber grating, and such a grating may be chirped or otherwise designed to have a desired bandwidth.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 17, 2022
    Applicant: nLIGHT, Inc.
    Inventors: Tyson L. Lowder, Dahv A.V. Kliner, C. Geoffrey Fanning
  • Publication number: 20220075121
    Abstract: Optical fiber devices, systems, and methods for coupling Raman spectrum out of an optical fiber selectively over a signal spectrum, which may be propagated in one or more guided modes of a fiber system. A fiber system may include a chirped fiber Bragg grating (CFBG) or a long period fiber grating (LPFG), each to unguide Raman light propagating in a core propagation mode of a fiber completely out of the fiber (through any surrounding cladding layer(s)) selectively over signal spectrum which is to remain in a guided mode of the fiber.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 10, 2022
    Applicant: nLIGHT, Inc.
    Inventors: Tyson L. Lowder, Dahv A.V. Kliner, C. Geoffrey Fanning