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:
Oct. 25, 1994
Filed:
Feb. 19, 1993
Applicant:
Inventors:
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ;
Abstract
This is disclosed a multi-beam semiconductor laser comprising: an active layer; a first and second cladding layer sandwiching the active layer,the second cladding layer being made of a first material; a contact layer provided on the second cladding layer; a current block layer provided in the second cladding layer, the current block layer being made of a second material and being spaced from the active layer with a predetermined distance; a dividing part provided above the current block for physically dividing the contact layer into two areas; and electrodes respectively provided on the divided areas of the contact layer.