Patents by Inventor Joshua Wittenberg
Joshua Wittenberg 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: 11923185Abstract: A method of forming a high-pressure plasma lamp includes providing a lamp bulb. The lamp bulb includes a top channel and a bottom channel. The method includes inserting a top electrode element into the top channel of the lamp bulb. The method includes providing a glass tubular structure attached to a bottom electrode element. The method includes filling the lamp bulb with a liquified gas through the bottom channel of the lamp bulb. The method includes inserting the bottom electrode element and the glass tubular structure into the bottom channel.Type: GrantFiled: June 10, 2022Date of Patent: March 5, 2024Assignee: KLA CorporationInventors: Mark S. Wang, Joshua Wittenberg
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Patent number: 11637008Abstract: A plasma lamp for use in a broadband plasma source of an inspection tool is disclosed. The plasma lamp includes a plasma bulb configured to contain a gas and generate a plasma within the plasma bulb. The plasma bulb is formed from a material at least partially transparent to illumination from a pump laser and at least a portion of broadband radiation emitted by the plasma. The plasma bulb includes a conical pocket. The conical pocket is configured to disrupt a plume rising from the plasma.Type: GrantFiled: August 18, 2022Date of Patent: April 25, 2023Assignees: KLA CORPORATION, USHIO, INC.Inventors: Sumeet Kumar, Joshua Wittenberg, Mark S. Wang, Rajkeshar Singh, Yoshio Kagebayashi, Shinichiro Nozaki
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Publication number: 20220406553Abstract: A method of forming a high-pressure plasma lamp includes providing a lamp bulb. The lamp bulb includes a top channel and a bottom channel. The method includes inserting a top electrode element into the top channel of the lamp bulb. The method includes providing a glass tubular structure attached to a bottom electrode element. The method includes filling the lamp bulb with a liquified gas through the bottom channel of the lamp bulb. The method includes inserting the bottom electrode element and the glass tubular structure into the bottom channel.Type: ApplicationFiled: June 10, 2022Publication date: December 22, 2022Inventors: Mark S. Wang, Joshua Wittenberg
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Patent number: 10495287Abstract: A broadband illumination source is disclosed. The broadband illumination source may include a pump source configured to generate pump illumination. The broadband illumination also includes an active medium containing nanocrystals. The broadband illumination source includes pump illumination optics configured to direct pump illumination into the active medium. The active medium is configured to emit broadband illumination by down-converting a portion of the pump illumination via photoluminescence.Type: GrantFiled: January 3, 2018Date of Patent: December 3, 2019Assignee: KLA-Tencor CorporationInventors: Ilya Bezel, Lauren Wilson, Joshua Wittenberg, Matthew Derstine
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Patent number: 10283342Abstract: A laser-sustained plasma lamp includes a gas containment structure configured to contain a volume of gas. The gas containment structure is configured to receive pump illumination from a pump laser for generating a plasma within the volume of gas. The gas containment structure includes one or more transmissive structures being at least partially transparent to the pump illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The one or more transmissive structures have a graded absorption profile so as to control heating of the one or more transmissive structures caused by the broadband radiation emitted by the plasma.Type: GrantFiled: November 23, 2016Date of Patent: May 7, 2019Assignee: KLA-Tencor CorporationInventors: Ilya Bezel, Anatoly Shchemelinin, Kenneth P. Gross, Matthew Panzer, Anant Chimmalgi, Lauren Wilson, Joshua Wittenberg
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Patent number: 10257918Abstract: An illumination pump source is disclosed. The illumination pump source includes a set of power sources configured to generate a set of laser beams, with at least some of the set of laser beams configured to include illumination having different wavelengths. The illumination pump source also includes an optical fiber. The illumination pump source also includes one or more optical elements, the one or more optical elements configured to couple the illumination from at least some of the laser beams to one or more regions of the optical fiber.Type: GrantFiled: September 23, 2016Date of Patent: April 9, 2019Assignee: KLA-Tencor CorporationInventors: Anant Chimmalgi, Sebaek Oh, Joshua Wittenberg, Lauren Wilson, Rahul Yadav, Ilya Bezel, Michael Navone, Anatoly Shchemelinin
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Patent number: 9899205Abstract: A system for forming a laser-sustained plasma includes a gas containment element, an illumination source configured to generate pump illumination, and a collector element configured to focus the pump illumination from the pumping source into the volume of the gas mixture in order to generate a plasma within the volume of the gas mixture that emits broadband radiation. The gas containment element may be configured to contain a volume of a gas mixture including a first gas component and a second gas component. The second gas component suppresses at least one of a portion of the broadband radiation associated with the first gas component or radiation by one or more excimers associated with the first gas component from a spectrum of radiation exiting the gas mixture.Type: GrantFiled: July 29, 2016Date of Patent: February 20, 2018Assignee: KLA-Tencor CorporationInventors: Ilya Bezel, Kenneth P. Gross, Lauren Wilson, Rahul Yadav, Joshua Wittenberg, Aizaz Bhuiyan, Anatoly Shchemelinin, Anant Chimmalgi, Richard Solarz
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Publication number: 20170345639Abstract: A system for forming a laser-sustained plasma includes a gas containment element, an illumination source configured to generate pump illumination, and a collector element configured to focus the pump illumination from the pumping source into the volume of the gas mixture in order to generate a plasma within the volume of the gas mixture that emits broadband radiation. The gas containment element may be configured to contain a volume of a gas mixture including a first gas component and a second gas component. The second gas component suppresses at least one of a portion of the broadband radiation associated with the first gas component or radiation by one or more excimers associated with the first gas component from a spectrum of radiation exiting the gas mixture.Type: ApplicationFiled: July 29, 2016Publication date: November 30, 2017Inventors: Ilya Bezel, Kenneth P. Gross, Lauren Wilson, Rahul Yadav, Joshua Wittenberg, Aizaz Bhuiyan, Anatoly Shchemelinin, Anant Chimmalgi, Richard Solarz
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Publication number: 20170164457Abstract: A laser-sustained plasma lamp includes a gas containment structure configured to contain a volume of gas. The gas containment structure is configured to receive pump illumination from a pump laser for generating a plasma within the volume of gas. The gas containment structure includes one or more transmissive structures being at least partially transparent to the pump illumination from the pump laser and at least a portion of the broadband radiation emitted by the plasma. The one or more transmissive structures have a graded absorption profile so as to control heating of the one or more transmissive structures caused by the broadband radiation emitted by the plasma.Type: ApplicationFiled: November 23, 2016Publication date: June 8, 2017Inventors: Ilya Bezel, Anatoly Shchemelinin, Kenneth P. Gross, Matthew Panzer, Anant Chimmalgi, Lauren Wilson, Joshua Wittenberg
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Patent number: 9615439Abstract: A system for forming a laser-sustained plasma includes a gas containment element, an illumination source configured to generate pump illumination, and a collector element. The gas containment element is configured to contain a volume of a gas mixture. The collector element is configured to focus the pump illumination from the pumping source into the volume of the gas mixture contained within the gas containment element in order to generate a plasma within the volume of the gas mixture that emits broadband radiation. The gas mixture filters one or more selected wavelengths of radiation emitted by the plasma.Type: GrantFiled: January 6, 2016Date of Patent: April 4, 2017Assignee: KLA-Tencor CorporationInventors: Ilya Bezel, Anatoly Shchemelinin, Kenneth P. Gross, Richard Solarz, Lauren Wilson, Rahul Yadav, Joshua Wittenberg, Anant Chimmalgi, Xiumei Liu, Brooke Bruguier
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Publication number: 20170094765Abstract: An illumination pump source is disclosed. The illumination pump source includes a set of power sources configured to generate a set of laser beams, with at least some of the set of laser beams configured to include illumination having different wavelengths. The illumination pump source also includes an optical fiber. The illumination pump source also includes one or more optical elements, the one or more optical elements configured to couple the illumination from at least some of the laser beams to one or more regions of the optical fiber.Type: ApplicationFiled: September 23, 2016Publication date: March 30, 2017Inventors: Anant Chimmalgi, Sebaek Oh, Joshua Wittenberg, Lauren Wilson, Rahul Yadav, Ilya Bezel, Michael Navone, Anatoly Shchemelinin
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Publication number: 20160205758Abstract: A system for forming a laser-sustained plasma includes a gas containment element, an illumination source configured to generate pump illumination, and a collector element. The gas containment element is configured to contain a volume of a gas mixture. The collector element is configured to focus the pump illumination from the pumping source into the volume of the gas mixture contained within the gas containment element in order to generate a plasma within the volume of the gas mixture that emits broadband radiation. The gas mixture filters one or more selected wavelengths of radiation emitted by the plasma.Type: ApplicationFiled: January 6, 2016Publication date: July 14, 2016Inventors: Ilya Bezel, Anatoly Shchemelinin, Kenneth P. Gross, Richard Solarz, Lauren Wilson, Rahul Yadav, Joshua Wittenberg, Anant Chimmalgi, Xiumei Liu, Brooke Bruguier
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Patent number: 9341761Abstract: Systems and methods for providing laser sustained plasma light sources are disclosed. Different from conventional laser sustained plasma light sources where one fiber size and one wavelength combination is used in the lamphouse to generate light for different bands and pixel sizes, switchable fiber sizes and wavelength combinations are provided for optimal power output in different wavelength bands and pixel sizes. More specifically, switchable fiber configurations are provided where larger fibers with higher pump powers are used for bigger pixel sizes and higher wavelength bands while smaller fibers are used for smaller pixel size and shorter wavelength bands. Additionally and/or alternatively, pumping schemes are provided where pump wavelengths close to the absorption peak of the gas fill are used for bigger pixel sizes while pump wavelengths away from the gas fill absorption peak are used for smaller pixel sizes.Type: GrantFiled: June 11, 2014Date of Patent: May 17, 2016Assignee: KLA-Tencor CorporationInventors: Anant Chimmalgi, Rahul Yadav, Joshua Wittenberg
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Publication number: 20150268400Abstract: Systems and methods for providing laser sustained plasma light sources are disclosed. Different from conventional laser sustained plasma light sources where one fiber size and one wavelength combination is used in the lamphouse to generate light for different bands and pixel sizes, switchable fiber sizes and wavelength combinations are provided for optimal power output in different wavelength bands and pixel sizes. More specifically, switchable fiber configurations are provided where larger fibers with higher pump powers are used for bigger pixel sizes and higher wavelength bands while smaller fibers are used for smaller pixel size and shorter wavelength bands. Additionally and/or alternatively, pumping schemes are provided where pump wavelengths close to the absorption peak of the gas fill are used for bigger pixel sizes while pump wavelengths away from the gas fill absorption peak are used for smaller pixel sizes.Type: ApplicationFiled: June 11, 2014Publication date: September 24, 2015Inventors: Anant Chimmalgi, Rahul Yadav, Joshua Wittenberg