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. 17, 2007
Filed:
Nov. 02, 2004
Applicants:
Mizunori Ezaki, Kanagawa-ken, JP;
Michihiko Nishigaki, Kanagawa-ken, JP;
Keiji Takaoka, Kanagawa-ken, JP;
Inventors:
Mizunori Ezaki, Kanagawa-ken, JP;
Michihiko Nishigaki, Kanagawa-ken, JP;
Keiji Takaoka, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); H01L 31/00 (2006.01); H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a vertical cavity surface emitting laser diode manufactured on a non-off-angle substrate with a (100)-oriented plane or the like, anisotropic stress is applied to a central portion of an active layer by forming a asymmetrical oxidation structure in an Al high concentration portion in the mesa, so that polarization controllability of a device can be improved.