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:
Jul. 08, 1986
Filed:
Feb. 09, 1984
Applicant:
Inventors:
Yoshimitsu Sasaki, Nishitama, JP;
Takashi Kajimura, Nishitama, JP;
Naoki Chinone, Hachioji, JP;
Michiharu Nakamura, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 49 ; 357 17 ;
Abstract
In a semiconductor laser device of the type which includes at least one laminate of a first dielectric layer and a second dielectric layer on at least one of the two facets of a resonator and in which the refractive index of the first dielectric layer is lower than that of the second dielectric layer, the improvement wherein the second dielectric layer consists of an amorphous material containing silicon and hydrogen at its essential constituent elements.