Patents by Inventor Susumu Noda

Susumu Noda 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).

  • Patent number: 10938177
    Abstract: To provide a two-dimensional photonic crystal surface emitting laser capable of improving characteristics of light to be emitted, in particular, optical output power. The two-dimensional photonic crystal surface emitting laser includes: a two-dimensional photonic crystal including a plate-shaped base member and modified refractive index regions where the modified refractive index regions have a refractive index different from that of the plate-shaped base member and are two-dimensionally and periodically arranged in the base member; an active layer provided on one side of the two-dimensional photonic crystal; and a first electrode and a second electrode provided sandwiching the two-dimensional photonic crystal and the active layer for supplying current to the active layer, where the second electrode covers a region equal to or wider than the first electrode.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: March 2, 2021
    Assignees: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu Noda, Hitoshi Kitagawa, Yong Liang, Akiyoshi Watanabe, Kazuyoshi Hirose
  • Publication number: 20210013700
    Abstract: A surface emission laser formed of a group III nitride semiconductor includes a first conductivity type first clad layer; a first conductivity type first guide layer on the first clad layer; a light-emitting layer on the first guide layer; a second guide layer on the light-emitting layer; and a second conductivity type second clad layer on the second guide layer. The first or second guide layer internally includes voids periodically arranged at square lattice positions with two axes perpendicular to one another as arrangement directions in a surface parallel to the guide layer. The voids have a polygonal prism structure or an oval columnar structure with a long axis and a short axis perpendicular to the long axis in the parallel surface, and the long axis is inclined with respect to one axis among the arrangement directions of the voids.
    Type: Application
    Filed: December 17, 2018
    Publication date: January 14, 2021
    Applicants: Kyoto University, Stanley Electric Co., Ltd.
    Inventors: Susumu NODA, Yoshinori TANAKA, Menaka DE ZOYSA, Tomoaki KOIZUMI, Kei EMOTO
  • Patent number: 10879669
    Abstract: A photonic crystal laser 10 is a laser that has a configuration, in which a light emitting layer (an active layer 12) that generates light including light of wavelength ?L, and a two-dimensional photonic crystal layer 11 including different refractive index regions (holes 111) disposed two-dimensionally on a plate-like base material 112, the different refractive index regions having a refractive index different from a refractive index of the base material, so that a refractive index distribution is formed, are stacked. Each different refractive index region in the two-dimensional photonic crystal layer 11 is disposed at a position shifted from each lattice point of a basic two-dimensional lattice that has periodicity defined to generate a resonant state of light of the wavelength ?L by forming a two-dimensional standing wave and not to emit light of the wavelength ?L to outside.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: December 29, 2020
    Assignees: KYOTO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
    Inventors: Susumu Noda, Kyoko Kitamura, Masako Yone
  • Patent number: 10866343
    Abstract: An object to provide a photonic crystal capable of resonating light at more resonant frequencies within a particular frequency range. A plurality of photonic crystal structure formation bodies each including a plate-like member in which cyclic refractive index distribution is formed are provided so as to be spaced apart from each other in the thickness direction of the plate-like member, and the respective refractive index distributions of the plurality of photonic crystal structure formation bodies are set such that: at least one of the plurality of photonic crystal structure formation bodies resonates with light having at least two frequencies within the frequency range; and the two frequencies are different from resonant frequencies of at least one of the other photonic crystal structure formation bodies.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: December 15, 2020
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Susumu Noda, Ardavan Oskooi, Yoshinori Tanaka
  • Publication number: 20200382048
    Abstract: The present invention provides a thermal radiation light source that allows a wider range of material choices than those of conventional techniques, so that light having a desired peak wavelength can easily be obtained. A thermal radiation light source 10 includes a thermo-optical converter made of an optical structure in which a refractive index distribution is formed in a member 11 made of an intrinsic semiconductor so as to resonate with light of a shorter wavelength than a wavelength corresponding to a bandgap of the intrinsic semiconductor. When heat is externally supplied to the thermo-optical converter, light having a spectrum in a band of shorter wavelengths than a cutoff wavelength is produced by interband absorption in the intrinsic semiconductor, and light of a resonant wavelength ?r in the wavelength band, the light causing resonance in the optical structure, is selectively intensified and emitted as thermal radiation light.
    Type: Application
    Filed: August 20, 2020
    Publication date: December 3, 2020
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Susumu NODA, Tatsuya SHIBAHARA, Menaka DE ZOYSA, Takashi ASANO, Keisuke KITANO, Katsuyoshi SUZUKI, Takuya INOUE, Kenji ISHIZAKI
  • Patent number: 10777972
    Abstract: A thermal radiation light source includes a laminated body including m quantum layers laminated where m is an integer of 2 or more, including an n-layer and a p-layer sandwiching the quantum layers from both sides in the laminating direction, the n-layer made of an n-type semiconductor and the p-layer made of a p-type semiconductor; a voltage applying unit for the m quantum layers is directly or indirectly connected to the n-layer and p-layer sandwiching each layer applying a voltage for moving to the n-layers or p-layers a charge; a voltage switching unit switches ON/OFF of application of the voltage to the m quantum layers; and a photonic crystal portion disposed in the laminated body or adjacent to the laminated body, so that lights of m wavelengths resonate, the lights of the m wavelengths generated in the m quantum layers corresponding to transition energy between subbands in the quantum layer.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: September 15, 2020
    Assignee: KYOTO UNIVERSITY
    Inventors: Susumu Noda, Takuya Inoue, Anqi Ji, Takashi Asano
  • Publication number: 20200251887
    Abstract: A method for manufacturing a surface emitting laser made of a group-III nitride semiconductor by an MOVPE method includes: (a) of growing a first cladding layer of a first conductive type on a substrate; (b) of growing a first optical guide layer of the first conductive type on the first cladding layer; (c) of forming holes having a two-dimensional periodicity in a plane parallel to the first optical guide layer, in the first optical guide layer by etching; (d) supplying a gas containing a group-III material and a nitrogen source and performing growth to form recessed portions having a facet of a predetermined plane direction above openings of the holes, thereby closing the openings of the holes; and (e) of planarizing the recessed portions by mass transport, after the openings of the holes have been closed, wherein after said the planarizing, at least one side surface of the holes is a {10-10} facet.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 6, 2020
    Applicants: KYOTO UNIVERSITY, STANLEY ELECTRIC CO., LTD.
    Inventors: Susumu NODA, Yoshinori TANAKA, Menaka DE ZOYSA, Junichi SONODA, Tomoaki KOIZUMI, Kei EMOTO
  • Publication number: 20200028327
    Abstract: To provide a two-dimensional photonic crystal surface emitting laser capable of improving characteristics of light to be emitted, in particular, optical output power. The two-dimensional photonic crystal surface emitting laser includes: a two-dimensional photonic crystal including a plate-shaped base member and modified refractive index regions where the modified refractive index regions have a refractive index different from that of the plate-shaped base member and are two-dimensionally and periodically arranged in the base member; an active layer provided on one side of the two-dimensional photonic crystal; and a first electrode and a second electrode provided sandwiching the two-dimensional photonic crystal and the active layer for supplying current to the active layer, where the second electrode covers a region equal to or wider than the first electrode.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicants: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu NODA, Hitoshi KITAGAWA, Yong LIANG, Akiyoshi WATANABE, Kazuyoshi HIROSE
  • Publication number: 20200028322
    Abstract: A photonic crystal laser 10 is a laser that has a configuration, in which a light emitting layer (an active layer 12) that generates light including light of wavelength ?L, and a two-dimensional photonic crystal layer 11 including different refractive index regions (holes 111) disposed two-dimensionally on a plate-like base material 112, the different refractive index regions having a refractive index different from a refractive index of the base material, so that a refractive index distribution is formed, are stacked. Each different refractive index region in the two-dimensional photonic crystal layer 11 is disposed at a position shifted from each lattice point of a basic two-dimensional lattice that has periodicity defined to generate a resonant state of light of the wavelength ?L by forming a two-dimensional standing wave and not to emit light of the wavelength ?L to outside.
    Type: Application
    Filed: February 27, 2018
    Publication date: January 23, 2020
    Applicants: KYOTO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
    Inventors: Susumu NODA, Kyoko KITAMURA, Masako YONE
  • Patent number: 10461501
    Abstract: To provide a two-dimensional photonic crystal surface emitting laser capable of improving characteristics of light to be emitted, in particular, optical output power.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 29, 2019
    Assignees: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu Noda, Hitoshi Kitagawa, Yong Liang, Akiyoshi Watanabe, Kazuyoshi Hirose
  • Patent number: 10461502
    Abstract: A two-dimensional photonic crystal surface emitting laser has, in a plate-shaped base body, a two-dimensional photonic crystal layer in which modified refractive index region pairs are periodically arranged and an active layer provided on one side of the base body, each of the modified refractive index region pairs including a first modified refractive index region and a second modified refractive index region having refractive indexes different from a refractive index of the base body, wherein an area of a planar shape of the first modified refractive index region is larger than or equal to an area of a planar shape of the second modified refractive index region, and a thickness of the first modified refractive index region is smaller than a thickness of the second modified refractive index region.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: October 29, 2019
    Assignees: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu Noda, Yoshinori Tanaka, Menaka De Zoysa
  • Patent number: 10389086
    Abstract: A two-dimensional photonic-crystal surface-emitting laser 10 includes: a two-dimensional photonic crystal (two-dimensional photonic crystal layer 12) including a plate-shaped base body 121 having a predetermined size in which modified refractive index areas 122 whose refractive index differs from the base body are periodically arranged in a two-dimensional pattern; an active layer 11 provided on one side of the two-dimensional photonic crystal; and first and second electrodes 15 and 16 facing each other across the two-dimensional photonic crystal and the active layer 11, for supplying an electric current to the active layer 11. The modified refractive index areas 122 are provided in such a manner that the in-plane occupancy of those areas 122 in the base body 121 decreases, or the lattice constant for those areas 122 increases, in the direction from an outer edge toward the center of a current passage region 21 which is a region where the electric current passes through the two-dimensional photonic crystal.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: August 20, 2019
    Assignees: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu Noda, Hitoshi Kitagawa, Yoshinori Tanaka
  • Patent number: 10382262
    Abstract: In some implementations, a system enables users to create dynamically configurable applications that can be dynamically configured and adjusted. An application that runs on the server system in a first configuration is configured using a first configuration template. Data indicating (i) that the application is being accessed on a computing device in the first configuration, and (ii) a request to adjust the first configuration of the application is received. Operations are then performed while the application is being accessed on the computing device in the first configuration. A second configuration template that specifies a second configuration of the application corresponding to the request included in the received data is generated. The application is adjusted using the second configuration template to run in the second configuration. An instruction is provided to the computing device to enable the computing device to access the application running in the second configuration.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 13, 2019
    Assignee: Appian Corporation
    Inventors: Suvajit Gupta, John Rogers, Fred Briden, Susumu Noda, Jonathon Blonchek
  • Patent number: 10355441
    Abstract: A laser module includes: a photonic crystal surface-emitting laser element; a collimating lens array for producing a parallel optical beam; a condenser lens for condensing the optical beam; and an optical fiber which receives the optical beam on one end and transmits the optical beam to the outside. In the collimating lens array, an aperture portion corresponding to a collimating lens allows passage of the optical beam with an energy of not less than 94.0% and not more than 99.5% with respect to 100% of the energy of the optical beam incident on the collimating lens array.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: July 16, 2019
    Assignees: MITSUBISHI ELECTRIC CORPORATION, KYOTO UNIVERSITY, HAMAMATSU PHOTONICS KK., ROHM CO., LTD.
    Inventors: Tatsuya Yamamoto, Kazuki Kuba, Masato Kawasaki, Yoko Inoue, Tetsuo Kojima, Junichi Nishimae, Susumu Noda
  • Publication number: 20190157836
    Abstract: A two-dimensional photonic crystal including a plate-shaped base body in which modified refractive index areas differs from the base body are periodically arranged in a two-dimensional pattern; an active layer provided on one side of the two-dimensional photonic crystal; and first and second electrodes facing each other across the two-dimensional photonic crystal and the active layer, for supplying an electric current to the active layer. The modified refractive index areas are provided in the in-plane occupancy of areas in the base body increases, or the lattice constant for those areas decreases, in the direction from an outer edge toward the center of a current passage region where the electric current passes through the two-dimensional photonic crystal. A stable laser oscillation can be obtained when temperature distribution is lower at the outer edge and higher at the center of the current passage region is formed within the two-dimensional photonic crystal.
    Type: Application
    Filed: August 25, 2016
    Publication date: May 23, 2019
    Applicants: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu NODA, Hitoshi KITAGAWA, Yoshinori TANAKA
  • Publication number: 20190067910
    Abstract: A thermal radiation light source includes a laminated body including m quantum layers laminated where m is an integer of 2 or more, including an n-layer and a p-layer sandwiching the quantum layers from both sides in the laminating direction, the n-layer made of an n-type semiconductor and the p-layer made of a p-type semiconductor; a voltage applying unit for the m quantum layers is directly or indirectly connected to the n-layer and p-layer sandwiching each layer applying a voltage for moving to the n-layers or p-layers a charge; a voltage switching unit switches ON/OFF of application of the voltage to the m quantum layers; and a photonic crystal portion disposed in the laminated body or adjacent to the laminated body, so that lights of m wavelengths resonate, the lights of the m wavelengths generated in the m quantum layers corresponding to transition energy between subbands in the quantum layer.
    Type: Application
    Filed: February 13, 2017
    Publication date: February 28, 2019
    Applicant: KYOTO UNIVERSITY
    Inventors: Susumu NODA, Takuya INOUE, Anqi JI, Takashi ASANO
  • Publication number: 20190064393
    Abstract: A thermal emission source is provided that has a structure capable of suppressing deterioration of an optical assembly over time. The thermal emission source includes an optical assembly (1) having an optical structure in which a member made of a semiconductor has a refractive index distribution so as to resonate with light of a wavelength shorter than a wavelength that corresponds to an absorption edge corresponding to a band gap of the semiconductor. The optical assembly (1) includes a coating structure (30) with a coating material that differs from the semiconductor of refractive portions (10) and through which light of a wavelength included in a wavelength range from visible light to far infrared rays can be transmitted.
    Type: Application
    Filed: February 28, 2017
    Publication date: February 28, 2019
    Inventors: Masahiro Suemitsu, Tadashi Saito, Susumu Noda, Takashi Asano, Menaka De Zoysa
  • Publication number: 20190067907
    Abstract: A two-dimensional photonic crystal surface emitting laser has, in a plate-shaped base body, a two-dimensional photonic crystal layer in which modified refractive index region pairs are periodically arranged and an active layer provided on one side of the base body, each of the modified refractive index region pairs including a first modified refractive index region and a second modified refractive index region having refractive indexes different from a refractive index of the base body, wherein an area of a planar shape of the first modified refractive index region is larger than or equal to an area of a planar shape of the second modified refractive index region, and a thickness of the first modified refractive index region is smaller than a thickness of the second modified refractive index region.
    Type: Application
    Filed: February 24, 2017
    Publication date: February 28, 2019
    Applicants: KYOTO UNIVERSITY, ROHM CO., LTD., HAMAMATSU PHOTONICS K.K., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Susumu NODA, Yoshinori TANAKA, Menaka DE ZOYSA
  • Patent number: 10186837
    Abstract: A control circuit in this laser equipment drives a drive circuit of a photonic crystal laser element under a predetermined condition. It was found that a wavelength width of a laser beam to be output from the photonic crystal laser element is dependent on a standardized drive current k and a pulse width T, and had a predetermined relationship with these. By meeting this condition, a laser beam with a plurality of wavelengths can be controlled and output.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: January 22, 2019
    Assignees: Kyoto University, HAMAMATSU PHOTONICS K.K.
    Inventors: Kazuyoshi Hirose, Akiyoshi Watanabe, Yoshitaka Kurosaka, Takahiro Sugiyama, Susumu Noda
  • Publication number: 20180348451
    Abstract: A laser module includes: a photonic crystal surface-emitting laser element; a collimating lens array for producing a parallel optical beam; a condenser lens for condensing the optical beam; and an optical fiber which receives the optical beam on one end and transmits the optical beam to the outside. In the collimating lens array, an aperture portion corresponding to a collimating lens allows passage of the optical beam with an energy of not less than 94.0% and not more than 99.5% with respect to 100% of the energy of the optical beam incident on the collimating lens array.
    Type: Application
    Filed: April 7, 2016
    Publication date: December 6, 2018
    Applicants: Mitsubishi Electric Corporation, Kyoto University, HAMAMATSU PHOTONICS K.K., ROHM CO., LTD.
    Inventors: Tatsuya YAMAMOTO, Kazuki KUBA, Masato KAWASAKI, Yoko INOUE, Tetsuo KOJIMA, Junichi NISHIMAE, Susumu NODA