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:
Jun. 13, 1989
Filed:
Aug. 24, 1988
Applicant:
Inventors:
Albrecht Mozer, Stuttgart, DE;
Kurt Losch, Stuttgart, DE;
Assignee:
Alcatel N.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 49 ; 372 31 ;
Abstract
A semiconductor laser is disclosed whose front or rear surface is provided with a multilayer dielectric and/or reflective coating in such a way that either a temperature-independent differential quantum efficiency or a temperature-independent power output is obtained. The sequence of layers is chosen so that the reflection coefficient decreases with increasing light wavelength. (In other laser systems, it may be necessary for the reflection coefficient to increase).