Patents by Inventor Robert J. Deri
Robert J. Deri 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: 20160315445Abstract: A laser diode package includes a heat pipe having a fluid chamber enclosed in part by a heat exchange wall for containing a fluid. Wicking channels in the fluid chamber is adapted to wick a liquid phase of the fluid from a condensing section of the heat pipe to an evaporating section of the heat exchanger, and a laser diode is connected to the heat exchange wall at the evaporating section of the heat exchanger so that heat produced by the laser diode is removed isothermally from the evaporating section to the condensing section by a liquid-to-vapor phase change of the fluid.Type: ApplicationFiled: March 24, 2016Publication date: October 27, 2016Inventors: Todd Bandhauer, Robert J. Deri, John W. Elmer, Jack Kotovsky, Susant Patra
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Publication number: 20160094016Abstract: Techniques for increasing the spatial and spectral brightness of laser arrays such as laser diode arrays are provided. Passive cavity designs are described that produce wavefront phase locking across the face of large arrays. These designs enable both spatial and spectral selectivity in order to coherently link the individual emitters that make up the diode array. Arrays of customized micro-optics correct aberrations of the individual apertures of the arrays while highly spectrally selective partial reflectors overcome the deleterious effects of inhomogeneities in local thermal environments of the individual emitters that are being phase locked together. Using these two technologies, along with intracavity diffractive beam coupling, solves two long standing problems that have prevented effective and robust phase locking of laser diode arrays.Type: ApplicationFiled: September 30, 2014Publication date: March 31, 2016Applicant: Lawrence Livermore National Security, LLCInventors: Raymond J. Beach, Robert J. Deri, Michael A. Johnson, Jeffrey L. Klingmann, William A. Molander, Mark D. Rotter, Michael Runkel, Craig Siders, Sheldon S. Wu
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Patent number: 9136668Abstract: A laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path.Type: GrantFiled: October 28, 2011Date of Patent: September 15, 2015Assignee: Lawrence Livermore National Security, LLCInventors: Andrew James Bayramian, Alvin Charles Erlandson, Kenneth Rene Manes, Mary Louis Spaeth, John Allyn Caird, Robert J. Deri
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Publication number: 20140318685Abstract: An apparatus for use in a friction stir operation, such as friction stir welding (FSW) or friction stir processing (FSP). The apparatus may have a rotating tool adapted to be plunged into a material, where the material is susceptible to being softened by heating. The rotating tool may further be adapted to be advanced along a surface of the material. An optical energy generating subsystem may be used to heat a portion of the material using optical energy as the tool is advanced along the material.Type: ApplicationFiled: October 16, 2012Publication date: October 30, 2014Inventors: Joseph C. Farmer, Alexander M. Rubenchik, Raymond J. Beach, Robert J. Deri, Edward I. Moses, Bassem S. El-Dasher, Sarath K. Menon, Terry McNelley
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Publication number: 20140307305Abstract: A laser amplifier system includes a gain medium having a longitudinal axis and a plurality of sides substantially parallel to the longitudinal axis. The laser amplifier system also includes a waveguide having a plurality of inner surfaces. Each of the inner surfaces is optically coupled to one of the plurality of sides of the gain medium. The waveguide also includes a plurality of outer surfaces. The laser amplifier system further includes a cladding optically coupled to the outer surfaces of the waveguide.Type: ApplicationFiled: June 12, 2012Publication date: October 16, 2014Inventors: Robert J. Deri, Alvin C. Erlandson, Andrew J. Bayramian, Raymond J. Beach
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Publication number: 20140286471Abstract: An architecture for a fusion power plant is disclosed. The plant includes a fusion chamber for producing neutrons from a fusion reaction, and a laser system in which lasers are arranged about a vacuum chamber to provide energy to the fusion chamber to initiate the fusion reaction. The beam paths between the lasers and the fusion chamber are configured to prevent neutrons from the fusion chamber from reaching the laser system at a level that would preclude human access to the laser system.Type: ApplicationFiled: November 8, 2011Publication date: September 25, 2014Inventors: Edward I. Moses, Jeffery F. Latkowski, Thomas M. Anklam, Mary L. Spaeth, Anthony Michael Dunne, Richard H. Sawicki, Robert J. Deri, Robin R. Miles, Andrew J. Bayramian, Kenneth R. Manes, Peter A. Amendt, Alvin C. Erlandson
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Patent number: 8811445Abstract: A substrate having an upper surface and a lower surface is provided. The substrate includes a plurality of v-grooves formed in the upper surface. Each v-groove includes a first side and a second side perpendicular to the first side. A laser diode bar assembly is disposed within each of the v-grooves and attached to the first side. The laser diode bar assembly includes a first adhesion layer disposed on the first side of the v-groove, a metal plate attached to the first adhesion layer, a second adhesion layer disposed over the metal plate, and a laser diode bar attached to the second adhesion layer. The laser diode bar has a coefficient of thermal expansion (CTE) substantially similar to that of the metal plate.Type: GrantFiled: March 29, 2010Date of Patent: August 19, 2014Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Diana Chen, Andy Bayramian, Barry Freitas, Jack Kotovsky
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Patent number: 8514475Abstract: An electro-optic device includes an electro-optic crystal having a predetermined thickness, a first face and a second face. The electro-optic device also includes a first electrode substrate disposed opposing the first face. The first electrode substrate includes a first substrate material having a first thickness and a first electrode coating coupled to the first substrate material. The electro-optic device further includes a second electrode substrate disposed opposing the second face. The second electrode substrate includes a second substrate material having a second thickness and a second electrode coating coupled to the second substrate material. The electro-optic device additionally includes a voltage source electrically coupled to the first electrode coating and the second electrode coating.Type: GrantFiled: October 27, 2010Date of Patent: August 20, 2013Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Mark A. Rhodes, Andrew J. Bayramian, John A. Caird, Mark A. Henesian, Christopher A. Ebbers
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Patent number: 8208509Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: GrantFiled: August 4, 2011Date of Patent: June 26, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Patent number: 8208508Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: GrantFiled: August 4, 2011Date of Patent: June 26, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Patent number: 8199787Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: GrantFiled: August 4, 2011Date of Patent: June 12, 2012Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Publication number: 20120105948Abstract: A laser amplifier module having an enclosure includes an input window, a mirror optically coupled to the input window and disposed in a first plane, and a first amplifier head disposed along an optical amplification path adjacent a first end of the enclosure. The laser amplifier module also includes a second amplifier head disposed along the optical amplification path adjacent a second end of the enclosure and a cavity mirror disposed along the optical amplification path.Type: ApplicationFiled: October 28, 2011Publication date: May 3, 2012Applicant: Lawrence Livermore National Security, LLCInventors: Andrew James Bayramian, Alvin Charles Erlandson, Kenneth Rene Manes, Mary Louis Spaeth, John Allyn Caird, Robert J. Deri
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Publication number: 20120105931Abstract: An electro-optic device includes an electro-optic crystal having a predetermined thickness, a first face and a second face. The electro-optic device also includes a first electrode substrate disposed opposing the first face. The first electrode substrate includes a first substrate material having a first thickness and a first electrode coating coupled to the first substrate material. The electro-optic device further includes a second electrode substrate disposed opposing the second face. The second electrode substrate includes a second substrate material having a second thickness and a second electrode coating coupled to the second substrate material. The electro-optic device additionally includes a voltage source electrically coupled to the first electrode coating and the second electrode coating.Type: ApplicationFiled: October 27, 2010Publication date: May 3, 2012Applicant: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Mark A. Rhodes, Andrew J. Bayramian, John A. Caird, Mark A. Henesian, Christopher A. Ebbers
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Publication number: 20110286481Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: ApplicationFiled: August 4, 2011Publication date: November 24, 2011Applicant: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack KoTovsky, Christopher M. Spadaccini
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Publication number: 20110286483Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: ApplicationFiled: August 4, 2011Publication date: November 24, 2011Applicant: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Publication number: 20110286482Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: ApplicationFiled: August 4, 2011Publication date: November 24, 2011Applicant: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Publication number: 20110235669Abstract: A substrate having an upper surface and a lower surface is provided. The substrate includes a plurality of v-grooves formed in the upper surface. Each v-groove includes a first side and a second side perpendicular to the first side. A laser diode bar assembly is disposed within each of the v-grooves and attached to the first side. The laser diode bar assembly includes a first adhesion layer disposed on the first side of the v-groove, a metal plate attached to the first adhesion layer, a second adhesion layer disposed over the metal plate, and a laser diode bar attached to the second adhesion layer. The laser diode bar has a coefficient of thermal expansion (CTE) substantially similar to that of the metal plate.Type: ApplicationFiled: March 29, 2010Publication date: September 29, 2011Applicant: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Diana Chen, Andy Bayramian, Barry Freitas, Jack Kotovsky
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Patent number: 8018980Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: GrantFiled: January 25, 2010Date of Patent: September 13, 2011Assignee: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Publication number: 20110182309Abstract: A laser diode package assembly includes a reservoir filled with a fusible metal in close proximity to a laser diode. The fusible metal absorbs heat from the laser diode and undergoes a phase change from solid to liquid during the operation of the laser. The metal absorbs heat during the phase transition. Once the laser diode is turned off, the liquid metal cools off and resolidifies. The reservoir is designed such that that the liquid metal does not leave the reservoir even when in liquid state. The laser diode assembly further includes a lid with one or more fin structures that extend into the reservoir and are in contact with the metal in the reservoir.Type: ApplicationFiled: January 25, 2010Publication date: July 28, 2011Applicant: Lawrence Livermore National Security, LLCInventors: Robert J. Deri, Jack Kotovsky, Christopher M. Spadaccini
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Patent number: 7194161Abstract: A wavelength router to be used for fiber optical networking router is based on a diffraction grating which utilizes only N wavelengths to interconnect N inputs to N outputs. The basic approach is to augment the grating with additional couplers or wavelength selective elements so than N?1 of the 2N?1 outputs are combined with other N outputs (leaving only N outputs). One embodiment uses directional couplers as combiners. Another embodiment uses wavelength-selective couplers. Another embodiment uses a pair of diffraction gratings to maintain parallel propagation of all optical beams. Also, beam combining can be implemented either by using retroflection back through the grating pair or by using couplers.Type: GrantFiled: June 30, 2000Date of Patent: March 20, 2007Assignee: The Regents of the University of CaliforniaInventors: Robert J. Deri, Rajesh R. Patel, Steven W. Bond, Cory V. Bennett