公开(公告)号：US20230275386A1

公开(公告)日：2023-08-31

申请号：US18311949

申请日：2023-05-04

Applicant: Gigaphoton Inc.

Inventor： Tsukasa HORI ,  Yasuaki KIYOTA ,  Hisakazu KATSUUMI

IPC: H01S3/038

CPC classification number: H01S3/0385 ,  H01S3/0381 ,  H01S3/0382 ,  H01S3/0388 ,  H01S3/223

Abstract: Discharge electrodes include a cathode and an anode. The anode is disposed to face the cathode in a discharge direction perpendicular to a longitudinal direction of the cathode, and includes an electrode base 1, and a coating layer that covers a portion of a surface of the electrode base. First corners in a cross section perpendicular to the longitudinal direction connect first straight sections formed of first side surfaces that are side surfaces of the electrode base to a first curved section formed of a first discharge surface that is a discharge surface of the electrode base. The first corners are closer to the cathode in the discharge direction than second corners connecting second straight sections formed of second side surfaces that are side surfaces of the coating layer to a second curved section formed of a second discharge surface that is a discharge surface of the coating layer.