Patents by Inventor Kevin Lascola
Kevin Lascola 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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Patent number: 11721953Abstract: Disclosed is an electrically pumped vertical cavity laser structure operating in the mid-infrared region, which has demonstrated room-temperature continuous wave operation. This structure uses an interband cascade gain region, two distributed mirrors, and a low-loss refractive index waveguide. A preferred embodiment includes at least one wafer bonded GaAs-based mirror.Type: GrantFiled: October 8, 2019Date of Patent: August 8, 2023Assignees: Thorlabs, Inc., Praevium Research, Inc.Inventors: Vijaysekhar Jayaraman, Stephen Segal, Kevin Lascola
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Patent number: 11289876Abstract: Disclosed is an optically pumped vertical cavity laser structure operating in the mid-infrared region, which has demonstrated room-temperature continuous wave operation. This structure uses a periodic gain active region with type I quantum wells comprised of InGaAsSb, and barrier/cladding regions which provide strong hole confinement and substantial pump absorption. A preferred embodiment includes at least one wafer bonded GaAs-based mirror. Several preferred embodiments also include means for wavelength tuning of mid-IR VCLs as disclosed, including a MEMS-tuning element. This document also includes systems for optical spectroscopy using the VCL as disclosed, including systems for detection concentrations of industrial and environmentally important gases.Type: GrantFiled: July 9, 2020Date of Patent: March 29, 2022Assignees: Thorlabs, Inc., Praevium Research, Inc.Inventors: Vijaysekhar Jayaraman, Kevin Lascola, Stephen Segal, Fredrick Towner, Alex Cable
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Publication number: 20200343687Abstract: Disclosed is an optically pumped vertical cavity laser structure operating in the mid-infrared region, which has demonstrated room-temperature continuous wave operation. This structure uses a periodic gain active region with type I quantum wells comprised of InGaAsSb, and barrier/cladding regions which provide strong hole confinement and substantial pump absorption. A preferred embodiment includes at least one wafer bonded GaAs-based mirror. Several preferred embodiments also include means for wavelength tuning of mid-IR VCLs as disclosed, including a MEMS-tuning element. This document also includes systems for optical spectroscopy using the VCL as disclosed, including systems for detection concentrations of industrial and environmentally important gases.Type: ApplicationFiled: July 9, 2020Publication date: October 29, 2020Inventors: Vijaysekhar Jayaraman, Kevin Lascola, Stephen Segal, Fredrick Towner, Alex Cable
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Patent number: 10714893Abstract: Disclosed is an optically pumped vertical cavity laser structure operating in the mid-infrared region, which has demonstrated room-temperature continuous wave operation. This structure uses a periodic gain active region with type I quantum wells comprised of InGaAsSb, and barrier/cladding regions which provide strong hole confinement and substantial pump absorption. A preferred embodiment includes at least one wafer bonded GaAs-based mirror. Several preferred embodiments also include means for wavelength tuning of mid-IR VCLs as disclosed, including a MEMS-tuning element. This document also includes systems for optical spectroscopy using the VCL as disclosed, including systems for detection concentrations of industrial and environmentally important gases.Type: GrantFiled: July 17, 2018Date of Patent: July 14, 2020Assignees: Thorlabs, Inc., Praevium Research, Inc.Inventors: Vijaysekhar Jayaraman, Kevin Lascola, Stephen Segal, Fredrick Towner, Alex Cable
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Publication number: 20200112140Abstract: Disclosed is an electrically pumped vertical cavity laser structure operating in the mid-infrared region, which has demonstrated room-temperature continuous wave operation. This structure uses an interband cascade gain region, two distributed mirrors, and a low-loss refractive index waveguide. A preferred embodiment includes at least one wafer bonded GaAs-based mirror.Type: ApplicationFiled: October 8, 2019Publication date: April 9, 2020Inventors: Vijaysekhar Jayaraman, Stephen Segal, Kevin Lascola
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Publication number: 20190044304Abstract: Disclosed is an optically pumped vertical cavity laser structure operating in the mid-infrared region, which has demonstrated room-temperature continuous wave operation. This structure uses a periodic gain active region with type I quantum wells comprised of InGaAsSb, and barrier/cladding regions which provide strong hole confinement and substantial pump absorption. A preferred embodiment includes at least one wafer bonded GaAs-based mirror. Several preferred embodiments also include means for wavelength tuning of mid-IR VCLs as disclosed, including a MEMS-tuning element. This document also includes systems for optical spectroscopy using the VCL as disclosed, including systems for detection concentrations of industrial and environmentally important gases.Type: ApplicationFiled: July 17, 2018Publication date: February 7, 2019Inventors: Vijaysekhar Jayaraman, Kevin Lascola, Stephen Segal, Fredrick Towner, Alex Cable
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Publication number: 20180323580Abstract: An interband cascade laser including: a ridge waveguide having alternating first and second regions; wherein the first region has a constant width, and the second region has a width that matches that of the first region at boundaries between the first region and the second region, and the width of the second region increases to a maximum that is larger than the width of the first region, such that a partially-corrugated sidewall along each side of the ridge waveguide is formed; wherein the first region comprises a grating structure, and due to periodic nature of the first region, the grating structure is in a form of a sampled grating; and wherein the partially-corrugated sidewall increases waveguide losses for radiation in higher order lateral modes as compared to the fundamental waveguide mode.Type: ApplicationFiled: April 30, 2018Publication date: November 8, 2018Inventors: Feng XIE, John PHAM, Michael P. STOCKER, Kevin LASCOLA
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Patent number: 7977659Abstract: A luminaire assembly comprising at least one magnetron, a least one microwave-powered bulb, a luminaire reflector, at least one waveguide, and a radio-frequency screen assembly is provided. The radio-frequency screen assembly, the radio frequency gasket, and the luminaire reflector are configured to form a microwave cavity that can accommodate a microwave-powered bulb. The at least one waveguide is configured to couple energy from the at least one magnetron to the microwave-powered bulb. The radio-frequency screen accommodates at least one latching structure. The at least one latching structure is configured to sufficiently compress or to release the radio-frequency screen and the luminaire assembly. In another embodiment, a radio-frequency screen assembly comprises a frame which comprises an opening defined by a plurality of edges. The frame comprises a planar portion and further comprises a ridge at one of the edges that extends in a direction perpendicular to the planar portion.Type: GrantFiled: May 1, 2008Date of Patent: July 12, 2011Assignee: Fusion UV Systems, Inc.Inventors: Curt Harper, George Jarrard, Kevin Lascola, Matthew Schroeder, David A. Sprankle, Charles H. Wood
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Patent number: 7906911Abstract: A luminaire reflector comprises a first end reflector segment, a second end reflector segment, and a main reflector segment bonded together as a single-piece. The main reflector segment, the first end reflector segment, and the second end reflector segment form a microwave cavity that can accommodate a microwave-powered bulb. The luminaire reflector is configured to be mated to at least one waveguide of a luminaire assembly. The luminaire reflector comprises at least one RF coupling slot to transmit microwave energy from the waveguide side to the microwave cavity side of the reflector assembly.Type: GrantFiled: May 1, 2008Date of Patent: March 15, 2011Assignee: Fusion UV Systems, Inc.Inventors: Charles H. Wood, Kevin Lascola, David A. Sprankle, George Jarrard
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Publication number: 20090273932Abstract: A luminaire reflector comprises a first end reflector segment, a second end reflector segment, and a main reflector segment bonded together as a single-piece. The main reflector segment, the first end reflector segment, and the second end reflector segment form a microwave cavity that can accommodate a microwave-powered bulb. The luminaire reflector is configured to be mated to at least one waveguide of a luminaire assembly. The luminaire reflector comprises at least one RF coupling slot to transmit microwave energy from the waveguide side to the microwave cavity side of the reflector assembly.Type: ApplicationFiled: May 1, 2008Publication date: November 5, 2009Inventors: Charles H. Wood, Kevin Lascola, David A. Sprankle, George Jerrard
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Publication number: 20090273937Abstract: A luminaire assembly comprising at least one magnetron, a least one microwave-powered bulb, a luminaire reflector, at least one waveguide, and a radio-frequency screen assembly is provided. The radio-frequency screen assembly, the radio frequency gasket, and the luminaire reflector are configured to form a microwave cavity that can accommodate a microwave-powered bulb. The at least one waveguide is configured to couple energy from the at least one magnetron to the microwave-powered bulb. The radio-frequency screen accommodates at least one latching structure. The at least one latching structure is configured to sufficiently compress or to release the radio-frequency screen and the luminaire assembly. In another embodiment, a radio-frequency screen assembly comprises a frame which comprises an opening defined by a plurality of edges. The frame comprises a planar portion and further comprises a ridge at one of the edges that extends in a direction perpendicular to the planar portion.Type: ApplicationFiled: May 1, 2008Publication date: November 5, 2009Inventors: Curt Harper, George Jarrard, Kevin Lascola, Matthew Schroeder, David A. Sprankle, Charles H. Wood