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:
Feb. 03, 2004
Filed:
Nov. 05, 2001
Applicant:
Inventor:
Akira Tanaka, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 5/00 ;
U.S. Cl.
CPC ...
H01S 5/00 ;
Abstract
A surface emitting semiconductor laser capable of improving high temperature properties is provided. In a surface emitting semiconductor laser, as well width of an active layer is set at from 4 nm to 6 nm and the number of wells thereof is set at one or two In addition, above and below the active layer, InGaAlP clad layers are formed, and in a stacking direction of the active layer, through the above and below clad layers each, further above and below thereof, light reflecting layers are formed.