公开(公告)号：US20230238780A1

公开(公告)日：2023-07-27

申请号：US18008589

申请日：2021-06-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takanori AKETA ,  Kenichiro TANAKA ,  Koji TSUBAKIMOTO ,  Noriaki MIYANAGA

IPC: H01S5/50 ,  H01L33/50 ,  H01L25/16 ,  H01L33/58 ,  H01S5/065 ,  H01S5/06 ,  H01S5/10 ,  H05B45/20

CPC classification number: H01S5/50 ,  H01L33/502 ,  H01L25/167 ,  H01L33/58 ,  H01S5/0656 ,  H01S5/0611 ,  H01S5/1092 ,  H05B45/20

Abstract: A light-emitting device includes an optical amplifier and gives off output light from optical amplifier by making a plurality of seed light rays, having mutually different wavelengths, incident on optical amplifier. Optical amplifier includes a medium portion containing a wavelength-converting element. Optical amplifier has wavelength-converting element thereof excited by excitation light to produce a plurality of partially coherent light rays, of which wavelengths are respectively the same as the mutually different wavelengths of plurality of seed light rays, thereby giving off, as output light, a multi-wavelength light beam. Excitation light has a shorter wavelength than any of plurality of seed light rays and is incident on the medium portion. Multi-wavelength light beam includes a plurality of light rays amplified. Plurality of light rays amplified have wavelengths, which are respectively the same as mutually different wavelengths of plurality of seed light rays.