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:
Jul. 20, 1993
Filed:
Sep. 26, 1991
Applicant:
Inventor:
Koichi Gen-ei, Ichikawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
359344 ; 372 45 ;
Abstract
A semiconductor laser amplifier according to this invention has an optical waveguide layer containing a p-type semiconductor layer in an n-type semiconductor substrate. On one end of the n-type semiconductor substrate, for example, a reflective film is formed as light-reflecting means. In this invention, two optical waveguide layers are arranged so as to form a V with these two layers meeting each other at one end, on which the reflective film is formed, of the substrate.