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:
Oct. 22, 1985
Filed:
Mar. 22, 1983
Applicant:
Inventors:
Yoshinobu Mitsuhashi, Ibaraki, JP;
Junichi Shimada, Ibaraki, JP;
Assignees:
Agency of Industrial Science and Technology, Tokyo, JP;
Ministry of International Trade and Industry, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 372 27 ; 372 92 ; 372106 ;
Abstract
In a semiconductor laser device wherein the laser beam emitted from an output end face of a semiconductor laser having antireflection coating for the opposite output end faces thereof is returned back to the output end face to induce self-coupling effects of the laser beam, the polarization characteristics of the output beam from the semiconductor laser are changed by controlling the polarization characteristics of the return beam.