The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2025
Filed:
Jan. 06, 2022
Sony Group Corporation, Tokyo, JP;
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Takahiro Arakida, Kanagawa, JP;
Shinichi Agatuma, Kanagawa, JP;
Rintaro Koda, Tokyo, JP;
Yasutaka Higa, Tokyo, JP;
Osamu Maeda, Kanagawa, JP;
Kota Tokuda, Kanagawa, JP;
Sony Group Corporation, Tokyo, JP;
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Abstract
The present technology provides a surface emitting laser capable of suppressing a decrease in luminous efficiency. The present technology provides a surface emitting laser including: first and second multilayer film reflectors; a plurality of active layers laminated together between the first and second multilayer film reflectors; a tunnel junction disposed between two active layers adjacent to each other in a lamination direction among the plurality of active layers; and an oxide confinement layer disposed between one active layer of the two adjacent active layers and the tunnel junction. According to the present technology, it is possible to provide a surface emitting laser capable of suppressing a decrease in luminous efficiency.