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:
Dec. 03, 1996
Filed:
Mar. 22, 1995
Applicant:
Inventors:
Yasuaki Yoshida, Itami, JP;
Akira Takemoto, Itami, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaishi, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 46 ; 372 45 ;
Abstract
A semiconductor laser device includes semiconductor layers including an active layer and cladding layers sandwiching the active layer and current injecting structure for regulating a region in the active layer into which current is injected. A light confinement coefficient in the current injection region perpendicular to the active layer is smaller than a light confinement coefficient in the same direction of a saturable absorption region. The function of the saturable absorption region is enhanced and pulsation oscillation can be produced at a high power light output.