公开(公告)号：US20210313769A1

公开(公告)日：2021-10-07

申请号：US17265983

申请日：2019-05-31

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yujin ZHENG ,  Takashi SEKINE ,  Yoshinori KATO ,  Norio KURITA ,  Toshiyuki KAWASHIMA

IPC: H01S5/14 ,  H01S3/08 ,  H01S5/40

Abstract: An external resonator-type semiconductor laser device 1A includes an external resonator formed of one or a plurality of laser diode light sources and a VBG; an optical fiber which outputs output light La from the laser diode light source toward the VBG, and into which return light Lb from the VBG is input; and a displacement unit that displaces a disposition position of the VBG with respect to an input and output end surface of the optical fiber.

公开(公告)号：US20170033537A1

公开(公告)日：2017-02-02

申请号：US15124778

申请日：2015-03-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yujin ZHENG ,  Hirofumi KAN

IPC: H01S5/40 ,  H01S5/14

CPC classification number: H01S5/4062 ,  H01S3/0804 ,  H01S3/08081 ,  H01S3/0815 ,  H01S5/02438 ,  H01S5/026 ,  H01S5/10 ,  H01S5/141 ,  H01S5/4025 ,  H01S5/405 ,  H01S5/4068 ,  H01S5/42

Abstract: A semiconductor laser device includes: a semiconductor laser array in which a plurality of active layers that emit laser lights with a divergence angle θS (>4°) in a slow axis direction are arranged; a first optical element that reflects first partial lights by a first reflecting surface and returns the first partial lights to the active layers; and a second optical element that reflects partial mode lights of second partial lights by a second reflecting surface and returns the partial mode lights to the active layers, the first reflecting surface forms an angle equal to or greater than 2° and less than (θS/2) with a plane perpendicular to an optical axis direction of the active layers, and the second reflecting surface forms an angle greater than (−θS/2) and equal to or less than −2° with the plane perpendicular to the optical axis direction of the active layers.

Abstract translation: 半导体激光器件包括：半导体激光器阵列，其中布置有沿慢轴方向发射发散角θS（> 4°）的激光的多个有源层; 第一光学元件，其通过第一反射表面反射第一部分光，并将第一部分光返回到有源层; 以及第二光学元件，其通过第二反射面反射第二部分光的部分模式光，并且将部分模式光返回到有源层，第一反射面形成等于或大于2°并小于（θS/ 2），垂直于有源层的光轴方向的平面，并且第二反射表面与垂直于光轴方向的平面形成大于（-θS/ 2）且等于或小于-2°的角度 的活性层。