Patents by Inventor Shunsuke Kono
Shunsuke Kono 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: 20140307750Abstract: A semiconductor laser apparatus is provided. The semiconductor laser apparatus includes a mode-locked semiconductor laser device and an external resonator including a dispersion compensation system, wherein the semiconductor laser apparatus is configured to generate self modulation, to introduce a negative group velocity dispersion into the external resonator, and to provide spectral filtering after the external resonator.Type: ApplicationFiled: November 9, 2012Publication date: October 16, 2014Inventors: Shunsuke Kono, Masaru Kuramoto, Takao Miyajima, Rintaro Koda, Hideki Watanabe
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Patent number: 8792160Abstract: Provided is a light-emitting device including (a) a layer structure obtained by sequentially growing on a base substrate a first compound semiconductor layer of a first conductivity type, (b) an active layer formed of a compound semiconductor, and (c) a second compound semiconductor layer of a second conductivity type; a second electrode formed on the second compound semiconductor layer; and a first electrode electrically connected to the first compound semiconductor layer. The layer structure formed of at least a part of the second compound semiconductor layer in a thickness direction of the second compound semiconductor layer. The first compound semiconductor layer has a thickness greater than 0.6 ?m. A high-refractive index layer formed of a compound semiconductor material having a refractive index higher than a refractive index of a compound semiconductor material of the first compound semiconductor layer is formed in the first compound semiconductor layer.Type: GrantFiled: September 13, 2012Date of Patent: July 29, 2014Assignee: Sony CorporationInventors: Rintaro Koda, Hideki Watanabe, Masaru Kuramoto, Shunsuke Kono, Takao Miyajima
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Publication number: 20140169391Abstract: A laser diode assembly includes: a mode-locked laser diode device; a diffraction grating that configures an external resonator, returns primary or more order diffracted light to the mode-locked laser diode device, and outputs 0-order diffracted light outside; and an imaging section provided between the mode-locked laser diode device and the diffraction grating and imaging an image of a light output end face of the mode-locked laser diode device on the diffraction grating.Type: ApplicationFiled: February 21, 2014Publication date: June 19, 2014Inventors: Shunsuke Kono, Hiroyuki Yokoyama, Masaru Kuramoto, Tomoyuki Oki
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Publication number: 20130342885Abstract: Disclosed is a dispersion compensation optical apparatus including a first transmission type volume hologram diffraction grating and a second transmission type volume hologram diffraction grating. The first and second transmission type volume hologram diffraction gratings are arranged facing each other. A sum of an incident angle of laser light and an emitting angle of first-order diffracted light is 90° in each of the first and second transmission type volume hologram diffraction gratings.Type: ApplicationFiled: June 12, 2013Publication date: December 26, 2013Inventors: Shunsuke Kono, Masaru Kuramoto, Kimihiro Saito, Seiji Kobayashi
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Patent number: 8588264Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: GrantFiled: August 18, 2011Date of Patent: November 19, 2013Assignees: Sony Corporation, Tohoku UniversityInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Publication number: 20130075772Abstract: Provided is a light-emitting device including (a) a layer structure obtained by sequentially growing on a base substrate a first compound semiconductor layer of a first conductivity type, (b) an active layer formed of a compound semiconductor, and (c) a second compound semiconductor layer of a second conductivity type; a second electrode formed on the second compound semiconductor layer; and a first electrode electrically connected to the first compound semiconductor layer. The layer structure formed of at least a part of the second compound semiconductor layer in a thickness direction of the second compound semiconductor layer. The first compound semiconductor layer has a thickness greater than 0.6 ?m. A high-refractive index layer formed of a compound semiconductor material having a refractive index higher than a refractive index of a compound semiconductor material of the first compound semiconductor layer is formed in the first compound semiconductor layer.Type: ApplicationFiled: September 13, 2012Publication date: March 28, 2013Applicant: SONY CORPORATIONInventors: Rintaro Koda, Hideki Watanabe, Masaru Kuramoto, Shunsuke Kono, Takao Miyajima
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Patent number: 8290005Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: GrantFiled: August 18, 2011Date of Patent: October 16, 2012Assignees: Sony Corporation, Tohoku UniversityInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Publication number: 20120099185Abstract: A laser diode assembly includes a mode-locked laser diode device, where a light output spectrum shows long-wavelength shift by self-phase modulation, an external resonator, and a wavelength selective element. A long wavelength component of a pulsed laser beam emitted through the external resonator from the mode-locked laser diode device is extracted by the wavelength selective element, and output to the outside.Type: ApplicationFiled: September 29, 2011Publication date: April 26, 2012Applicants: TOHOKU UNIVERSITY, SONY CORPORATIONInventors: Hiroyuki Yokoyama, Shunsuke Kono, Masaru Kuramoto
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Publication number: 20120099610Abstract: A laser diode assembly includes: a mode-locked laser diode device; a diffraction grating that configures an external resonator, returns primary or more order diffracted light to the mode-locked laser diode device, and outputs 0-order diffracted light outside; and an imaging section provided between the mode-locked laser diode device and the diffraction grating and imaging an image of a light output end face of the mode-locked laser diode device on the diffraction grating.Type: ApplicationFiled: October 6, 2011Publication date: April 26, 2012Applicants: Tohoku University, SONY CORPORATIONInventors: Shunsuke Kono, Hiroyuki Yokoyama, Masaru Kuramoto, Tomoyuki Oki
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Patent number: 8116343Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration. The laser diode can be driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: GrantFiled: March 14, 2011Date of Patent: February 14, 2012Assignees: Sony Corporation, Tohoku UniversityInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Patent number: 8111723Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: GrantFiled: July 21, 2009Date of Patent: February 7, 2012Assignees: Sony Corporation, Tohoku UniversityInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Publication number: 20120002690Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: ApplicationFiled: August 18, 2011Publication date: January 5, 2012Applicant: SONY CORPORATIONInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Publication number: 20120002695Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: ApplicationFiled: August 18, 2011Publication date: January 5, 2012Applicant: SONY CORPORATIONInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Patent number: 8081669Abstract: A method of driving an ultrashort pulse and ultrahigh power laser diode device having a simple composition and a simple structure is provided. In the method of driving a laser diode device, light is injected from a light injection means into a laser diode device driven by a pulse current having a value 10 or more times as large as a value of a threshold current.Type: GrantFiled: February 23, 2010Date of Patent: December 20, 2011Assignees: Sony Corporation, Tohoku UniversityInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda
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Publication number: 20110164632Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration. The laser diode can be driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: ApplicationFiled: March 14, 2011Publication date: July 7, 2011Applicant: SONY CORPORATIONInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe
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Publication number: 20100220754Abstract: A method of driving an ultrashort pulse and ultrahigh power laser diode device having a simple composition and a simple structure is provided. In the method of driving a laser diode device, light is injected from a light injection means into a laser diode device driven by a pulse current having a value 10 or more times as large as a value of a threshold current.Type: ApplicationFiled: February 23, 2010Publication date: September 2, 2010Applicants: Sony Corporation, Tohoku UniversityInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda
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Publication number: 20100027573Abstract: An ultrashort pulse/ultra-high power laser diode with a simple structure and configuration is provided. In a method of driving a laser diode, the laser diode is driven by a pulse current which is 10 or more times higher than a threshold current value. The width of the pulse current is preferably 10 nanoseconds or less, and the value of the pulse current is specifically 0.4 amperes or over.Type: ApplicationFiled: July 21, 2009Publication date: February 4, 2010Applicants: SONY CORPORATION, TOHOKU UNIVERSITYInventors: Hiroyuki Yokoyama, Shunsuke Kono, Tomoyuki Oki, Masao Ikeda, Takao Miyajima, Hideki Watanabe