公开(公告)号：US11226536B2

公开(公告)日：2022-01-18

申请号：US16987972

申请日：2020-08-07

Applicant: Gigaphoton Inc. ,  The University of Tokyo

Inventor： Chen Qu ,  Yohei Kobayashi ,  Zhigang Zhao ,  Hironori Igarashi

IPC: G03B27/54 ,  G02F1/35 ,  G02F1/355 ,  G03F7/20

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.

公开(公告)号：US11862931B2

公开(公告)日：2024-01-02

申请号：US17666656

申请日：2022-02-08

Applicant: Gigaphoton Inc.

Inventor： Atsushi Fuchimukai ,  Chen Qu

IPC: H01S5/024 ,  H01S3/00 ,  H01S5/16 ,  H01S5/22

CPC classification number: H01S5/02453 ,  H01S5/164 ,  H01S5/2201

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.