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:
Dec. 13, 1988
Filed:
Feb. 04, 1987
Applicant:
Inventors:
Bruce A Vojak, Naperville, IL (US);
Sang K Sheem, Pleasanton, CA (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 46 ; 372 45 ; 372 50 ;
Abstract
A laser which contains a substantially planar waveguide wherein the waveguide along the direction of light propagation is comprised of varying combinations of high-gain and low-gain regions so that the cumulative gain from one end of the optical cavity to the other varies as a function of position along a line within the plane of said waveguide which is perpendicular to the direction of light propagation.