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. 27, 2001
Filed:
Nov. 25, 1998
Applicant:
Inventors:
Masaki Ohya, Tokyo, JP;
Kenji Endo, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/20 ;
U.S. Cl.
CPC ...
H01S 5/20 ;
Abstract
A light emitting semiconductor element comprises a first additive layer which is added into a cladding layer or a middle layer. The first additive layer has a lattice constant which is different from a lattice constant of a semiconductor substrate. The light emitting semiconductor element is attached to a heat sink to form a laser device. The heat sink gives deformation to the light emitting semiconductor element. The first additive layer generates strain therein and suppresses influence of the deformation.