Patents by Inventor C. Geoffrey Fanning

C. Geoffrey Fanning 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).

  • 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: 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: 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: 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
  • Publication number: 20220069538
    Abstract: Optical fiber devices, systems, and methods for separating Raman spectrum from signal spectrum Raman spectrum may be suppressed as a result of a reduction in gain and/or through dissipation while the signal spectrum may Raman Components In be propagated in one or more guided modes of a fiber system. A fiber system may Length include a propagation mode coupler to couple a first guided mode into a second guided mode with an efficiency that varies as a function of wavelength of the propagated light. Mode coupling efficiency may be higher for Raman spectrum, and lower for signal spectrum so that Raman spectrum associated with a fundamental mode is preferentially coupled into a higher-order mode. A fiber system may include a mode filter operable to discriminate between first and second guided modes. Within the filter, guiding of the first mode may be superior to that of the second mode with Raman spectrum preferentially rejected.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 3, 2022
    Applicant: nLIGHT, Inc.
    Inventors: Tyson L. Lowder, Dahv A.V. Kliner, C. Geoffrey Fanning
  • Patent number: 10193295
    Abstract: A fiber laser system comprises a main body, wherein the main body includes one or more fiber laser system components and a first wall hingedly attached to the main body along a first edge, the first wall having a first wall open position and a first wall closed position and a plurality of feed fiber management and splicing components mounted to the first wall. Additionally and/or alternatively, the laser system may comprise a cooling plate hingedly attached to the main body, the cooling plate has a cooling plate open position and a cooling plate closed position. Additionally and/or alternatively, the laser system may include a fiber management tray hingedly mounted to the cooling plate, the fiber management tray having a fiber management tray open position and a fiber management tray closed position.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: January 29, 2019
    Assignee: nLIGHT, Inc.
    Inventors: Aaron Ludwig Hodges, C. Geoffrey Fanning, Christopher Luetjen
  • Patent number: 10096965
    Abstract: Pulsed fiber lasers that amplify seed laser pulses include pump laser drivers that produce simmer currents during periods in which the seed pulse is suspended, and forward currents associated with steady state pulse amplification. By suitable selection of simmer currents, initiation of a series of seed pulses produces pulse-to-pulse output powers with suitable power variation.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: October 9, 2018
    Assignee: nLIGHT, Inc.
    Inventors: C. Geoffrey Fanning, Timothy N. Kutscha
  • Publication number: 20180097333
    Abstract: A fiber laser system comprises a main body, wherein the main body includes one or more fiber laser system components and a first wall hingedly attached to the main body along a first edge, the first wall having a first wall open position and a first wall closed position and a plurality of feed fiber management and splicing components mounted to the first wall. Additionally and/or alternatively, the laser system may comprise a cooling plate hingedly attached to the main body, the cooling plate has a cooling plate open position and a cooling plate closed position. Additionally and/or alternatively, the laser system may include a fiber management tray hingedly mounted to the cooling plate, the fiber management tray having a fiber management tray open position and a fiber management tray closed position.
    Type: Application
    Filed: September 28, 2017
    Publication date: April 5, 2018
    Applicant: nLIGHT, Inc.
    Inventors: Aaron Ludwig Hodges, C. Geoffrey Fanning, Christopher Luetjen
  • Patent number: 9281652
    Abstract: A laser system includes a laser resonator having a laser resonator volume and a gain block disposed therein, the gain block being configured to emit light at a predetermined laser wavelength, and an OPO unstable resonator having an OPO unstable resonator volume, the OPO unstable resonator optically coupled to the laser resonator and configured to receive light therefrom, wherein a portion of the OPO unstable resonator volume is situated with respect to the laser resonator volume so as to form an overlapping volume.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: March 8, 2016
    Assignee: nLIGHT Photonics Corporation
    Inventors: C. Geoffrey Fanning, David R. Balsley
  • Publication number: 20150263481
    Abstract: Pulsed fiber lasers that amplify seed laser pulses include pump laser drivers that produce simmer currents during periods in which the seed pulse is suspended, and forward currents associated with steady state pulse amplification. By suitable selection of simmer currents, initiation of a series of seed pulses produces pulse-to-pulse output powers with suitable power variation.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Inventors: C. Geoffrey Fanning, Timothy N. Kutscha
  • Patent number: 7653109
    Abstract: An optical assembly, such as a multiple output diode laser pump source for EDFAs, is formed by pressing an optical array emitter chip against a standoff structure protruding from a submount such that the emitter chip deforms to match the curvature of the standoff structure. An IO chip is also juxtaposed against the standoff structure such that its optical receivers can receive optical energy from the emitter chip. The IO chip can provide various optical functions, and then provide an optical array output for coupling into an optical fiber array. The standoff structure preferably contacts the emitter chip over an aggregate contact area much smaller than the area by which the emitter chip overlaps the submount. The materials used for bonding the emitter chip and the IO chip to the submount are disposed in the recesses between standoffs and not on the contact surfaces of the standoff structure.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: January 26, 2010
    Assignee: Gemfire Corporation
    Inventors: William K. Bischel, David K. Wagner, Harald Guenther, Simon J. Field, Markus P. Hehlen, Richard B. Tompane, Andrew T. Ryan, C. Geoffrey Fanning, Jim W. Li, Nina D. Morozova
  • Patent number: 7235150
    Abstract: An optical assembly, such as a multiple output diode laser pump source for EDFAs, is formed by pressing an optical array emitter chip against a standoff structure protruding from a submount such that the emitter chip deforms to match the curvature of the standoff structure. An IO chip is also juxtaposed against the standoff structure such that its optical receivers can receive optical energy from the emitter chip. The IO chip can provide various optical functions, and then provide an optical array output for coupling into an optical fiber array. The standoff structure preferably contacts the emitter chip over an aggregate contact area much smaller than the area by which the emitter chip overlaps the submount. The materials used for bonding the emitter chip and the IO chip to the submount are disposed in the recesses between standoffs and not on the contact surfaces of the standoff structure.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: June 26, 2007
    Assignee: Gemfire Corporation
    Inventors: William K. Bischel, David K. Wagner, Harald Guenther, Simon J. Field, Markus P. Hehlen, Richard B. Tompane, Andrew T. Ryan, C. Geoffrey Fanning, Jim W. Li, Nina D. Morozova
  • Publication number: 20040105611
    Abstract: An optical assembly, such as a multiple output diode laser pump source for EDFAs, is formed by pressing an optical array emitter chip against a standoff structure protruding from a submount such that the emitter chip deforms to match the curvature of the standoff structure. An IO chip is also juxtaposed against the standoff structure such that its optical receivers can receive optical energy from the emitter chip. The IO chip can provide various optical functions, and then provide an optical array output for coupling into an optical fiber array. The standoff structure preferably contacts the emitter chip over an aggregate contact area much smaller than the area by which the emitter chip overlaps the submount. The materials used for bonding the emitter chip and the IO chip to the submount are disposed in the recesses between standoffs and not on the contact surfaces of the standoff structure.
    Type: Application
    Filed: July 9, 2003
    Publication date: June 3, 2004
    Applicant: Gemfire Corporation
    Inventors: William K. Bischel, David K. Wagner, Harald Guenther, Simon J. Field, Markus P. Hehlen, Richard B. Tompane, Andrew T. Ryan, C. Geoffrey Fanning, Jim Weijian Li, Nina D. Morozova
  • Publication number: 20020110328
    Abstract: An optical assembly, such as a multiple output diode laser pump source for EDFAs, is formed by pressing an optical array emitter chip against a standoff structure protruding from a submount such that the emitter chip deforms to match the curvature of the standoff structure. An IO chip is also juxtaposed against the standoff structure such that its optical receivers can receive optical energy from the emitter chip. The IO chip can provide various optical functions, and then provide an optical array output for coupling into an optical fiber array. The standoff structure preferably contacts the emitter chip over an aggregate contact area much smaller than the area by which the emitter chip overlaps the submount. The materials used for bonding the emitter chip and the IO chip to the submount are disposed in the recesses between standoffs and not on the contact surfaces of the standoff structure.
    Type: Application
    Filed: February 14, 2001
    Publication date: August 15, 2002
    Inventors: William K. Bischel, David K. Wagner, Harald Guenther, Simon J. Field, Markus P. Hehlen, Richard B Tompane, Andrew T. Ryan, C. Geoffrey Fanning, Jim Weijian Li, Nina D. Morozova