Patents Assigned to nLIGHT Photonics
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Patent number: 7443895Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: GrantFiled: March 17, 2006Date of Patent: October 28, 2008Assignee: nLight Photonics CorporationInventors: Derek E. Schulte, Yu Yan, Robert J. Martinsen, Aaron L. Hodges, Scott R. Karlsen
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Patent number: 7436868Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: GrantFiled: December 20, 2005Date of Patent: October 14, 2008Assignee: nLight Photonics CorporationInventors: Derek E. Schulte, Yu Yan, Robert J. Martinsen, Aaron L. Hodges, Scott R. Karlsen
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Patent number: 7420996Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: GrantFiled: March 17, 2006Date of Patent: September 2, 2008Assignee: nLight Photonics CorporationInventors: Derek E. Schulte, Yu Yan, Robert J. Martinsen, Aaron L. Hodges, Scott R. Karlsen
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Publication number: 20080117944Abstract: Method and apparatus are provided that limit the current ramp rate applied to a laser bar or a single emitter laser diode to a predetermined value of 150 milliamps per millisecond or less. In addition to the laser diode and its power supply, the apparatus includes a power supply control circuit that performs the function of limiting the power supply ramp rate. The power supply control circuit can be separate from, or integrated within, the power supply.Type: ApplicationFiled: November 16, 2006Publication date: May 22, 2008Applicant: nLight Photonics CorporationInventors: David Clifford Dawson, David R. Balsley
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Publication number: 20070268946Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: July 31, 2007Publication date: November 22, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070268947Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: July 31, 2007Publication date: November 22, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070268945Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: July 31, 2007Publication date: November 22, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070235839Abstract: A method of minimizing stress within large area semiconductor devices which utilize a GaAs substrate and one or more thick layers of AlxGa1-xAs is provided, as well as the resultant device. In general, each thick AlxGa1-xAs layer within the semiconductor structure is replaced, during the structure's fabrication, with an AlxGa1-xAszP1-z layer of approximately the same thickness and with the same concentrations of Al and Ga. The AlxGa1-xAszP1-z layer is lattice matched to the GaAs substrate by replacing a small percentage of the As in the layer with P.Type: ApplicationFiled: October 7, 2005Publication date: October 11, 2007Applicant: nLight Photonics CorporationInventors: Mark DeVito, Paul Crump, Jun Wang, Weimin Dong, Michael Grimshaw, Christopher Ebert
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Publication number: 20070217468Abstract: A laser diode package is provided, the package including a plurality of laser diode submount assemblies. Each submount assembly includes a submount. At least one laser diode is attached to a front portion of each submount while a spacer, preferably comprised of an electrically isolating pad and an electrical contact pad, is attached to a rear portion of each submount. Electrical interconnects, such as wire or ribbon interconnects, connect the laser diode or diodes to the electrical contact pad, either directly or indirectly. Preferably the laser diode stack is formed by electrically and mechanically bonding together the bottom surface of each submount to the electrical contact pad of an adjacent submount assembly. The laser diode stack is thermally coupled to a cooling block. Preferably thermally conductive and electrically isolating members are interposed between the laser diode stack and the cooling block.Type: ApplicationFiled: May 4, 2006Publication date: September 20, 2007Applicant: nLight Photonics CorporationInventors: Mark DeFranza, David Dawson, Jason Farmer
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Publication number: 20070217469Abstract: A side-pumped solid state laser utilizing a laser diode stack of laser diode submount assemblies is provided. The laser gain medium of the solid state laser is contained within a laser cavity defined by a pair of reflective elements. Each laser diode submount assembly includes a submount to which one or more laser diodes are attached. The radiation-emitting active layer of each laser diode is positioned substantially parallel to the mounting surfaces of the submount, causing the fast axis of each laser diode's output beam to be substantially orthogonal to the submount mounting surfaces. The laser diodes can be of one wavelength or multiple wavelengths. Preferably the submount has a high thermal conductivity and a CTE that is matched to that of the laser diode. On top of the submount, adjacent to the laser diode, is a spacer. The laser diode stack is formed by mechanically coupling the bottom surface of each submount to the spacer of an adjacent submount assembly.Type: ApplicationFiled: May 4, 2006Publication date: September 20, 2007Applicant: nLight Photonics CorporationInventors: Mark DeFranza, David Dawson, Jason Farmer
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Publication number: 20070217471Abstract: A laser diode package is provided, the package including a plurality of laser diode submount assemblies. Each laser diode submount assembly includes a submount comprised of a non-conductive material. At least one laser diode is attached to a first portion of one surface of each submount while a spacer is attached to a second portion of the same submount surface. Preferably the submount has a high thermal conductivity and a CTE that is matched to that of the laser diode. The laser diode stack is formed by mechanically coupling the bottom surface of each submount to the spacer of an adjacent submount assembly. The individual laser diodes of the fabricated stack can be serially coupled together, coupled together in parallel, or individually addressable. To provide package cooling, the laser diode stack is thermally coupled to a cooling block.Type: ApplicationFiled: July 24, 2006Publication date: September 20, 2007Applicant: nLight Photonics CorporationInventors: Mark DeFranza, David Dawson, Jason Farmer
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Publication number: 20070217470Abstract: An end-pumped solid state laser utilizing a laser diode stack of laser diode subassemblies as the pump source is provided. The laser gain medium of the solid state laser is contained within a laser cavity defined by a pair of reflective elements. Each laser diode subassembly includes a submount to which one or more laser diodes are attached. The fast axis corresponding to each output beam of each laser diode is substantially perpendicular to the mounting surfaces of the submount. The laser diodes can be of one wavelength or multiple wavelengths. Preferably the submount has a high thermal conductivity and a CTE that is matched to that of the laser diode. On top of the submount, adjacent to the laser diode, is a spacer. The laser diode stack is formed by mechanically coupling the bottom surface of each submount to the spacer of an adjacent submount assembly. Preferably the laser diode stack is thermally coupled to a cooling block.Type: ApplicationFiled: May 18, 2006Publication date: September 20, 2007Applicant: nLight Photonics CorporationInventors: Mark DeFranza, David Dawson, Jason Farmer
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Publication number: 20070217467Abstract: A laser diode package is provided. The laser diode package includes a plurality of laser diode submount assemblies, each assembly including a submount to which one or more laser diodes are attached. An electrically isolating pad is attached to the same surface of the submount as the laser diode. A metallization layer is deposited onto the outermost surface of the electrically isolating pad, to which an electrical contact pad is bonded. Electrical interconnects, such as wire or ribbon interconnects, connect the laser diode or diodes to the metallization layer. Preferably the laser diode stack is formed by electrically and mechanically bonding together the bottom surface of each submount to the electrical contact pad of an adjacent submount assembly. The laser diode stack is thermally coupled to a cooling block. Preferably thermally conductive and electrically isolating members are interposed between the laser diode stack and the cooling block.Type: ApplicationFiled: March 20, 2006Publication date: September 20, 2007Applicant: nLight Photonics CorporationInventors: Mark DeFranza, David Dawson, Jason Farmer
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Publication number: 20070171947Abstract: A system is provided that electrically isolates a diode laser when the health of the diode laser deteriorates past a preset value. In addition to the diode laser and its power supply, the system includes a monitoring system that monitors the voltage across the diode laser and/or the voltage across a series resistor and/or the operating temperature of the diode laser and/or one or more characteristics of the output beam of the diode laser and/or the temperature of the diode laser coolant and/or the flow rate of the diode laser coolant. The system also includes a power supply controller and associated control circuit that is activated upon receipt of a trigger signal from the monitoring system.Type: ApplicationFiled: January 24, 2006Publication date: July 26, 2007Applicant: nLight Photonics CorporationInventor: Jacob Bell
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Publication number: 20070116074Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: March 17, 2006Publication date: May 24, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070116070Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: December 20, 2005Publication date: May 24, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070116072Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: March 17, 2006Publication date: May 24, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070116077Abstract: An optical source comprised of a stack of at least two laser diode subassemblies is provided. Each laser diode subassembly includes a submount and a multi-mode, single emitter laser diode. Each of the at least two laser diode subassemblies is mounted to a mounting member. Means are included to vertically displace the output beams from the individual laser diode subassemblies to form an optical source output beam. In at least one embodiment, the mounting member performs the function of the vertically displacing means.Type: ApplicationFiled: September 8, 2006Publication date: May 24, 2007Applicant: nLight Photonics CorporationInventors: Jason Nathaniel Farmer, Derek Schulte, Yu Yan
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Publication number: 20070116073Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: March 17, 2006Publication date: May 24, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen
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Publication number: 20070116071Abstract: An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the fabrication of a close packed and compact assembly in which individual diode laser subassembly output beams do not interfere with one another.Type: ApplicationFiled: March 17, 2006Publication date: May 24, 2007Applicant: nLight Photonics CorporationInventors: Derek Schulte, Yu Yan, Robert Martinsen, Aaron Hodges, Scott Karlsen