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:
Jan. 15, 2013
Filed:
Sep. 16, 2009
Yasumasa Kawakita, Tokyo, JP;
Kageyama Takeo, Tokyo, JP;
Hitoshi Shimizu, Tokyo, JP;
Furukawa Electric Co., Ltd, Tokyo, JP;
Abstract
A vertical cavity surface emitting laser element as described herein can suppress of any dislocation, when a distributed Bragg reflector (DBR) mirror is formed on the onto a substrate (). The vertical cavity surface emitting laser can be designed so that an average of strain in the DBR mirror () and a layer thickness of the DBR mirror () are in reference to a curvature of the substrate () in order to satisfy a predetermined condition, and then nitrogen can be added into the DBR mirror () with a composition that corresponds to a designed average of strain in the DBR mirror (). For example, the average composition of nitrogen can be designed to be between 0.028% and 0.390%.