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. 10, 2022
Filed:
Apr. 27, 2020
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventor:
Masaki Yanagisawa, Osaka, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/183 (2006.01); H01S 5/028 (2006.01); H01S 5/343 (2006.01); H01S 5/22 (2006.01); H01S 5/042 (2006.01); H01S 5/187 (2006.01);
U.S. Cl.
CPC ...
H01S 5/18361 (2013.01); H01S 5/0282 (2013.01); H01S 5/04256 (2019.08); H01S 5/187 (2013.01); H01S 5/18394 (2013.01); H01S 5/2206 (2013.01); H01S 5/34313 (2013.01);
Abstract
A surface emitting laser includes a substrate, a mesa of semiconductor layers including a lower reflector layer, an active layer, an upper reflector layer, and an upper contact layer that are successively laminated on the substrate, and an electrode provided on the upper contact layer. The upper contact layer includes GaAs. The electrode includes an alloy layer including Pt, in contact with the upper contact layer.