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:
Feb. 28, 1995
Filed:
Nov. 12, 1993
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor laser for producing visible light includes a first conductivity type semiconductor substrate; a first conductivity type semiconductor first cladding layer, a semiconductor active layer of GaAs.sub.1-y P.sub.y (y.ltoreq.0.45), and a second conductivity type second cladding layer, the first cladding layer, the active layer, and the second cladding layer being successively disposed on the semiconductor substrate, the first and second cladding layers having substantially the same composition and a different composition from the active layer, thereby forming heterojunctions with the active layer, and having a lattice constant different from the lattice constant of the active layer and introducing stress into the active layer without producing dislocations in the active layer; and first and second electrodes electrically connected to the substrate and the second cladding layer, respectively.