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:
Nov. 12, 2002
Filed:
Oct. 10, 2000
Mitsuaki Shimizu, Tsukuba, JP;
Abstract
A surface-type light amplifier device has an active layer ( ) of a light amplification section ( ) sandwiched between an n-type semiconductor cladding layer ( ) that is an n-type semiconductor layer and a p-type semiconductor multilayer reflecting mirror ( ). The light amplification section is attached to a transparent substrate ( ) on the side of the n-type semiconductor cladding layer. A plurality of divided electrodes ( ) form electrical continuity relative to the p-type semiconductor multilayer reflecting mirror via a p-type cap layer ( ) provided on the reflecting mirror. An electrode ( ) forming electrical continuity relative to the n-type semiconductor cladding layer is connected to a wiring conductor ( ) provided on the surface of the transparent substrate. The device enables amplification of a single, uniform, large-diameter light beam and oscillation of a laser.