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:
Jan. 26, 1994
Applicant:
Inventor:
Hajime Shoji, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 45 ; 372 96 ; 372 26 ; 372 99 ; 372107 ;
Abstract
The surface emitting laser of the present invention provided with a resonator has a structure in which a quantum well structure where a light absorption wavelength region is changed due to the Wannier-Stark effect or quantum-confinement Stark effect is formed in the non-doped Distributed Bragg Reflector mirror at the opposite side to a semiconductor substrate out of a pair of Distributed Bragg Reflector mirrors sandwiching the resonator.