Patents by Inventor Chen QU

Chen QU 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).

  • Publication number: 20240364076
    Abstract: A laser system includes a first semiconductor laser device configured to output first CW laser light, a first semiconductor optical amplification device configured to amplify the first CW laser light and output second CW laser light, an optical parametric amplification device configured to amplify the second CW laser light and output first pulse laser light, and a wavelength conversion device configured to perform wavelength conversion on the first pulse laser light and output second pulse laser light in a deep ultraviolet wavelength region.
    Type: Application
    Filed: July 9, 2024
    Publication date: October 31, 2024
    Applicant: Gigaphoton Inc.
    Inventors: Chen QU, Taisuke MIURA
  • Publication number: 20240346290
    Abstract: Aspects of the technology provide systems and methods for implementing an asymmetric dual encoder architecture. The architecture includes a token embedder layer section having a first token embedding section associated with a first input and a second token embedding section associated with a second input, and an encoder layer section having a first encoder section receiving token embeddings from the first token embedding section and a second encoder section receiving token embeddings from the second token embedding section. A shared projection layer receives encodings from both the first and second encoder sections and generates a set of projections. An embedding space is configured, based on the set of projections, to generate a question embedding and an answer embedding, in which the question and answer embeddings are used in identifying a set of candidate answers to an input answer.
    Type: Application
    Filed: April 13, 2023
    Publication date: October 17, 2024
    Inventors: Zhe Dong, Jianmo Ni, Imed Zitouni, Enrique Alfonseca, Daniel Martin Bikel, Chen Qu
  • Patent number: 11862931
    Abstract: In a laser system according to an aspect of the present disclosure, the following components are disposed: a first container that accommodates a first heater and a first crystal holder holding a first nonlinear crystal and includes a first light incident window via which laser light is incident and a first light exit window via which the laser light exits; a second container that accommodates a second heater and a second crystal holder holding a second nonlinear crystal and includes a second light incident window via which the laser light is incident and a second light exit window via which the laser light exits; and a stage that holds the first and second containers. A controller controls the stage to move the first nonlinear crystal away from the optical path of the laser light and inserts the second nonlinear crystal into the optical path of the laser light.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: January 2, 2024
    Assignee: Gigaphoton Inc.
    Inventors: Atsushi Fuchimukai, Chen Qu
  • Publication number: 20230178957
    Abstract: A solid-state laser system according to an aspect of the present disclosure includes a first non-linear crystal that generates first wavelength-converted light based on a first laser beam, a first adjustment unit configured to perform phase matching of the first wavelength-converted light in the first non-linear crystal, a second non-linear crystal that generates second wavelength-converted light based on a second laser beam and the first wavelength-converted light, a second adjustment unit configured to perform phase matching of the second wavelength-converted light in the second non-linear crystal, a light detection unit configured to detect light having a selected wavelength, and a processor configured to control the first adjustment unit based on intensity of at least one of the first wavelength-converted light and the first laser beam and to control the second adjustment unit based on intensity of at least one of the second wavelength-converted light and the first wavelength-converted light.
    Type: Application
    Filed: February 3, 2023
    Publication date: June 8, 2023
    Applicant: Gigaphoton Inc.
    Inventors: Yohei TANAKA, Chen QU
  • Publication number: 20220158411
    Abstract: In a laser system according to an aspect of the present disclosure, the following components are disposed: a first container that accommodates a first heater and a first crystal holder holding a first nonlinear crystal and includes a first light incident window via which laser light is incident and a first light exit window via which the laser light exits; a second container that accommodates a second heater and a second crystal holder holding a second nonlinear crystal and includes a second light incident window via which the laser light is incident and a second light exit window via which the laser light exits; and a stage that holds the first and second containers. A controller controls the stage to move the first nonlinear crystal away from the optical path of the laser light and inserts the second nonlinear crystal into the optical path of the laser light.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 19, 2022
    Applicant: Gigaphoton Inc.
    Inventors: Atsushi FUCHIMUKAI, Chen QU
  • Publication number: 20220158402
    Abstract: A wavelength conversion apparatus according to an aspect of the present disclosure is a wavelength conversion apparatus that performs wavelength conversion of light through a non-linear crystal and including a first non-linear crystal, a container in which the first non-linear crystal is housed, a crystal holding member provided inside the container for fixing the first non-linear crystal, a first window provided to the container for guiding light to the first non-linear crystal from outside of the container, a second window provided to the container for guiding light output from the first non-linear crystal to outside of the container, a first heater provided inside the container for heating the first non-linear crystal, a battery that supplies electric power to the first heater, and a first controller that controls electric power supply to the first heater.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 19, 2022
    Applicant: Gigaphoton Inc.
    Inventors: Yohei TANAKA, Chen QU, Atsushi FUCHIMUKAI
  • Publication number: 20220155650
    Abstract: A wavelength conversion system according to an aspect of the present disclosure includes a first crystal holder holding a first non-linear crystal, a second crystal holder holding a second non-linear crystal, a third crystal holder holding a third non-linear crystal, and a container housing the holders. The container has an entrance window and an emission window. The first non-linear crystal, the second non-linear crystal, and the third non-linear crystal are disposed in this order on an optical path of a laser beam traveling from the entrance window to the emission window. The crystal holders are rotatable. A first rotational axis that is a rotational axis of the first crystal holder is orthogonal to a second rotational axis that is a rotational axis of the second crystal holder, and the first rotational axis is parallel to a third rotational axis that is a rotational axis of the third crystal holder.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 19, 2022
    Applicant: Gigaphoton Inc.
    Inventors: Chen QU, Hironori IGARASHI, Atsushi FUCHIMUKAI
  • Patent number: 11226536
    Abstract: A wavelength conversion system including: A. a first nonlinear optical crystal to which first pulsed laser light having a first polarization state and a first wavelength and second pulsed laser light having a second polarization state and a second wavelength are inputted and which is configured to output in response to the input the second pulsed laser light and first sum frequency light having the second polarization state and a third wavelength produced by sum frequency mixing of the first wavelength with the second wavelength; and B. a second nonlinear optical crystal to which the first sum frequency light and the second pulsed laser light outputted from the first nonlinear optical crystal are inputted and which is configured to output in response to the input third pulsed laser light having a fourth wavelength.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: January 18, 2022
    Assignees: Gigaphoton Inc., The University of Tokyo
    Inventors: Chen Qu, Yohei Kobayashi, Zhigang Zhao, Hironori Igarashi
  • Publication number: 20200363697
    Abstract: A wavelength conversion system including: A. a first nonlinear optical crystal to which first pulsed laser light having a first polarization state and a first wavelength and second pulsed laser light having a second polarization state and a second wavelength are inputted and which is configured to output in response to the input the second pulsed laser light and first sum frequency light having the second polarization state and a third wavelength produced by sum frequency mixing of the first wavelength with the second wavelength; and B. a second nonlinear optical crystal to which the first sum frequency light and the second pulsed laser light outputted from the first nonlinear optical crystal are inputted and which is configured to output in response to the input third pulsed laser light having a fourth wavelength.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 19, 2020
    Applicants: Gigaphoton Inc., The University of Tokyo
    Inventors: Chen QU, Yohei KOBAYASHI, Zhigang ZHAO, Hironori IGARASHI
  • Patent number: D505138
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 17, 2005
    Assignee: Jamac, Inc.
    Inventors: Toshiya Takayasu, Chen Qu Bo