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:
Sep. 05, 1989
Filed:
Mar. 18, 1988
Applicant:
Inventors:
Hiroshi Hayashi, Kyoto, JP;
Shigeki Maei, Nara, JP;
Osamu Yamamoto, Nara, JP;
Hidenori Kawanishi, Higashiosaka, JP;
Nobuyuki Miyauchi, Tenri, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ; H01S / ; H01S / ; H01L / ;
U.S. Cl.
CPC ...
372 92 ; 372 43 ; 372 36 ; 372 93 ; 372 99 ; 357 81 ;
Abstract
An external cavity type semiconductor laser apparatus comprising a semiconductor laser device and an external reflector, which are mounted on a single mounting base with a distance therebetween, wherein laser light from the light-emitting rear facet of the laser device is reflected by the reflector and returns to the laser device, the coefficient of linear expansion of the mounting base being smaller than that of Cu and being greater than those of both the laser device and the reflector.