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:
Mar. 09, 2010
Filed:
Mar. 24, 2008
Osamu Maeda, Kanagawa, JP;
Masaki Shiozaki, Kanagawa, JP;
Norihiko Yamaguchi, Kanagawa, JP;
Yoshinori Yamauchi, Tokyo, JP;
Takahiro Arakida, Kanagawa, JP;
Osamu Maeda, Kanagawa, JP;
Masaki Shiozaki, Kanagawa, JP;
Norihiko Yamaguchi, Kanagawa, JP;
Yoshinori Yamauchi, Tokyo, JP;
Takahiro Arakida, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A Vertical Cavity Surface Emitting Laser capable of being easily and inexpensively manufactured and stabilizing the polarization direction of laser light in one direction is provided. The VCSEL includes a semiconductor lamination structure including a first multilayer film reflector, an active layer having a light emitting region, and a second multilayer film reflectors, in this order over a substrate from the substrate side. The semiconductor lamination structure has a pair of grooves provided with a region opposed to the light emitting region in between, and one or a plurality of first oxidation layers including a first non-oxidation region provided at least in a region opposed to the light emitting region and a first oxidation region provided on each side face of the pair of grooves.