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:
Aug. 22, 1989
Filed:
Feb. 26, 1988
Applicant:
Inventors:
Nobuyuki Miyauchi, Tenri, JP;
Hidenori Kawanishi, Higashiosaka, JP;
Shigeki Maei, Nara, JP;
Osamu Yamamoto, Nara, JP;
Hiroshi Hayashi, Soraku, JP;
Assignee:
Sharp Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ; H01S / ; H01S / ;
U.S. Cl.
CPC ...
372 92 ; 372 36 ; 372 49 ; 372 50 ; 372 93 ; 372 98 ; 372 99 ; 357 19 ; 357 80 ; 357 75 ; 357 81 ;
Abstract
An external cavity type semiconductor laser apparatus comprising a semiconductor laser device and an external cavity, which are mounted on a single mounting base with a space therebetween, wherein laser light emitted from the light-emitting rear facet of the laser device is reflected by the external cavity and returns to the laser device. The reflectivity of the light-emitting rear facet of the laser device being different from that of the light-emitting front facet of the laser device.