公开(公告)号：US20200169059A1

公开(公告)日：2020-05-28

申请号：US16779065

申请日：2020-01-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichi IJIMA ,  Kazumasa NAGANO ,  Norio IKEDO

IPC: H01S5/022 ,  G11B5/48

Abstract: A submount includes a substrate, the substrate including: a first surface; a second surface that is perpendicular to the first surface; a third surface that is perpendicular to the first surface and the second surface; a fourth surface that is perpendicular to the first surface and the second surface, and is opposed to the third surface; a fifth surface that is perpendicular to the second surface and the third surface, and is opposed to the first surface; a sixth surface that is opposed to the second surface; a first notch part that is provided in a portion at which the second surface and the third surface are adjacent to each other; and a second notch part that is provided in a portion at which the second surface and the fourth surface are adjacent to each other, the first notch part and the second notch part each having a recessed surface.