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:
Apr. 18, 1995
Filed:
Jul. 07, 1994
Haruki Kurihara, Tokyo, JP;
Motoyuki Yamamoto, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A semiconductor laser device comprising, a first clad layer of the first conductivity type semiconductor crystal deposited on a first electrode layer, an active layer, a second clad layer formed of a semiconductor crystal of a second conductivity type, a current barrier layer having a stripe-like current inlet opening, a second electrode layer formed of a semiconductor crystal of the second conductivity type, and disposed on the current barrier layer and on the electric current inlet opening. A first electrode is formed on the second electrode layer. A second electrode is formed on the bottom surface of the first electrode layer. Between the current barrier layer and the second clad layer is formed a photoelectric current barrier layer formed of a semiconductor crystal of the first conductivity type having a larger band gap than that of the active layer.