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. 10, 2003
Filed:
Apr. 19, 2000
Applicant:
Inventors:
Takeharu Asano, Miyagi, JP;
Masao Ikeda, Kanagawa, JP;
Tsuyoshi Tojo, Miyagi, JP;
Shigetaka Tomiya, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/22 ;
U.S. Cl.
CPC ...
H01S 5/22 ;
Abstract
In a semiconductor laser having a ridge-shaped stripe and made of nitride III-V compound semiconductors, opposite sides of the ridge are buried with a buried semiconductor layer of Al As (0<×≦1), (Al Ga ) In P (0≦×≦1, 0≦y≦1) or Zn Mg S Se (0≦×≦1, 0≦y≦1) to stably control transverse modes, thereby minimizing higher mode oscillation during a high power output, and improving the heat dissipation property.