Patents by Inventor David C. Dawson
David C. Dawson 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).
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Publication number: 20230273391Abstract: An optical component has a bottom part located in an opening defined by a surface, wherein a distance between a sidewall of the bottom part of the optical component and a sidewall of the opening is non-uniform in which a width of a first section of the opening or a first section of the bottom part of the optical component is narrower than a width of a second lower section of the opening or a width of a second lower section of the bottom part of the optical component; and an adhesive is located in the opening between sidewalls.Type: ApplicationFiled: July 12, 2021Publication date: August 31, 2023Inventors: David Martin Hemenway, Wolfram URBANEK, Kevin Fortier, David C. DAWSON, Eric Martin
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Patent number: 11424598Abstract: 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.Type: GrantFiled: September 17, 2020Date of Patent: August 23, 2022Assignee: nLIGHT, Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Publication number: 20210006043Abstract: 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.Type: ApplicationFiled: September 17, 2020Publication date: January 7, 2021Applicant: nLIGHT, Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Patent number: 10797471Abstract: 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.Type: GrantFiled: April 2, 2019Date of Patent: October 6, 2020Assignee: nLIGHT Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Patent number: 10761276Abstract: 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.Type: GrantFiled: May 13, 2016Date of Patent: September 1, 2020Assignee: nLIGHT, Inc.Inventors: David Martin Hemenway, Aaron Brown, David C. Dawson, Kylan Hoener, Shelly Lin, Wolfram Urbanek
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Patent number: 10732357Abstract: A fiber termination assembly includes an optical fiber inserted into an optical ferrule disposed in an optical passageway of a heat conductive housing, the optical passageway providing an optical path aligned with the openings of the housing, the optical ferrule including a central bore concentrically disposed about the optical path and configured to receive a portion of a proximal end of the optical fiber therein, the optical ferrule and optical fiber secured in relation to the heat conductive housing with epoxy at a distal end of the optical ferrule, wherein the optical ferrule is transparent at a predetermined wavelength of light such that for light coupled into an input surface of the proximal end of the optical fiber at least a portion of the light propagating as cladding modes is stripped out of the optical fiber and transported to and dissipated in the heat conductive housing.Type: GrantFiled: October 23, 2015Date of Patent: August 4, 2020Assignee: nLIGHT, Inc.Inventors: Kylan Hoener, David C. Dawson, Kevin A. Shea, R. Kirk Price
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Patent number: 10630041Abstract: A laser diode assembly, comprising a plurality of laser diodes each configured to emit respective ones of a plurality of laser beams along parallel and nonoverlapping optical axes and a first beam offset plate (BOP) configured to receive a first of the laser beams on a first input surface, the first laser beam having a first input optical axis, the first BOP configured to transmit a first output laser beam that has a first vertical offset from the first input optical axis.Type: GrantFiled: March 27, 2018Date of Patent: April 21, 2020Assignee: NLIGHT, INC.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek
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Patent number: 10564361Abstract: Beam compressors include separated surfaces having positive and negative optical powers. A surface spacing is selected so that a collimated beam input to the beam compressor is output as a collimated beam. In some examples, beam compressors are situated to compress a laser beam stack that includes beams associated with a plurality of laser diodes. Beam compression ratios are typically selected so that a compressed beam stack focused into an optical waveguide has a numerical aperture corresponding to the numerical aperture of the optical waveguide.Type: GrantFiled: March 14, 2019Date of Patent: February 18, 2020Assignee: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek
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Patent number: 10418774Abstract: 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.Type: GrantFiled: December 3, 2018Date of Patent: September 17, 2019Assignee: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek, Roger L. Farrow, Dahv A. V. Kliner
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Publication number: 20190229499Abstract: 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.Type: ApplicationFiled: April 2, 2019Publication date: July 25, 2019Applicant: nLIGHT, Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Publication number: 20190221990Abstract: 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.Type: ApplicationFiled: December 3, 2018Publication date: July 18, 2019Applicant: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek, Roger L. Farrow, Dahv A.V. Kliner
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Patent number: 10355369Abstract: Dipole antenna coupled to a source of excitation signals with center frequency of wavelength ?, comprising a first dipole element with a first feeder element electrically connected to a first radiating element and a first crested element electrically connected to the first radiating element. Second dipole element comprising a second feeder element electrically connected to the second radiating element. Groundplane electrically connected to first and second dipole elements. Antenna hole formed through first feeder element. Source of excitation signals received in the first feeder element the antenna hole, connected to the second feeder element. Parallel first and second feeder elements. Coaxial first and second radiating elements. Parallel first and second crested elements. The groundplane is orthogonal to the first and second dipole elements, and parallel to the first and second radiating element.Type: GrantFiled: May 8, 2018Date of Patent: July 16, 2019Assignee: The United States of America as represented by the Secretary of the NavyInventor: David C. Dawson
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Publication number: 20190212497Abstract: Beam compressors include separated surfaces having positive and negative optical powers. A surface spacing is selected so that a collimated beam input to the beam compressor is output as a collimated beam. In some examples, beam compressors are situated to compress a laser beam stack that includes beams associated with a plurality of laser diodes. Beam compression ratios are typically selected so that a compressed beam stack focused into an optical waveguide has a numerical aperture corresponding to the numerical aperture of the optical waveguide.Type: ApplicationFiled: March 14, 2019Publication date: July 11, 2019Applicant: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek
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Patent number: 10283939Abstract: 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.Type: GrantFiled: December 20, 2017Date of Patent: May 7, 2019Assignee: nLIGHT, Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Patent number: 10261261Abstract: Beam compressors include separated surfaces having positive and negative optical powers. A surface spacing is selected so that a collimated beam input to the beam compressor is output as a collimated beam. In some examples, beam compressors are situated to compress a laser beam stack that includes beams associated with a plurality of laser diodes. Beam compression ratios are typically selected so that a compressed beam stack focused into an optical waveguide has a numerical aperture corresponding to the numerical aperture of the optical waveguide.Type: GrantFiled: February 16, 2017Date of Patent: April 16, 2019Assignee: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek
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Patent number: 10158210Abstract: A high power diode laser module is provided with improved high temperature handling and reliability, the module including a housing made of a thermally conductive material and providing a module interior extending between a plurality of housing surfaces, at least one diode laser disposed in the module interior and situated to emit a laser beam, one or more optical components disposed in the module interior and coupled to the at least one diode laser so as to change one or more characteristics of the laser beam, a waveguide in optical communication with the module interior and situated to receive the laser beam from the one or more optical components, and an optical absorber disposed in the housing and situated to receive stray light which is associated with the laser beam and which is propagating in the module interior so as to absorb the stray light and conduct heat associated with the stray light away from the module interior and into the housing.Type: GrantFiled: December 16, 2015Date of Patent: December 18, 2018Assignee: nLIGHT, Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Patent number: 10153608Abstract: 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.Type: GrantFiled: March 17, 2017Date of Patent: December 11, 2018Assignee: NLIGHT, INC.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek, Roger L. Farrow, Dahv A. V. Kliner
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Publication number: 20180278008Abstract: A laser diode assembly, comprising a plurality of laser diodes each configured to emit respective ones of a plurality of laser beams along parallel and nonoverlapping optical axes and a first beam offset plate (BOP) configured to receive a first of the laser beams on a first input surface, the first laser beam having a first input optical axis, the first BOP configured to transmit a first output laser beam that has a first vertical offset from the first input optical axis.Type: ApplicationFiled: March 27, 2018Publication date: September 27, 2018Applicant: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek
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Publication number: 20180183214Abstract: 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.Type: ApplicationFiled: December 20, 2017Publication date: June 28, 2018Applicant: nLIGHT, Inc.Inventors: David C. Dawson, Wolfram Urbanek, David Martin Hemenway
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Publication number: 20170271837Abstract: 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.Type: ApplicationFiled: March 17, 2017Publication date: September 21, 2017Applicant: nLIGHT, Inc.Inventors: David Martin Hemenway, David C. Dawson, Wolfram Urbanek, Roger L. Farrow, Dahv A.V. Kliner