公开(公告)号：US20220297230A1

公开(公告)日：2022-09-22

申请号：US17693953

申请日：2022-03-14

Applicant: SHIMADZU CORPORATION ,  OSAKA UNIVERSITY

Inventor： Masahiro TSUKAMOTO ,  Yuji SATO ,  Keisuke TAKENAKA ,  Ritsuko HIGASHINO ,  Koji TOJO

IPC: B23K26/06 ,  B23K26/067 ,  G02B27/10 ,  G02B19/00

Abstract: A laser apparatus includes six first laser devices that output respective blue laser beams for preliminary heating of an object, and a second laser device that outputs an infrared laser beam for main heating of the object. At least one of a relative positional relationship and each of respective first irradiation positions of the blue laser beams is changeable, the relative positional relationship being a relative positional relationship between the respective first irradiation positions of the six first laser beams in the object and a second irradiation position of the infrared laser beam in the object.