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:
Jan. 18, 2011
Filed:
Oct. 31, 2007
Yuji Masui, Kanagawa, JP;
Takahiro Arakida, Kanagawa, JP;
Yoshinori Yamauchi, Tokyo, JP;
Norihiko Yamaguchi, Kanagawa, JP;
Rintaro Koda, Tokyo, JP;
Tomoyuki Oki, Kanagawa, JP;
Yuji Masui, Kanagawa, JP;
Takahiro Arakida, Kanagawa, JP;
Yoshinori Yamauchi, Tokyo, JP;
Norihiko Yamaguchi, Kanagawa, JP;
Rintaro Koda, Tokyo, JP;
Tomoyuki Oki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention provides a laser diode realizing improved light detection precision. The laser diode includes a stack structure in which a first semiconductor layer of a first conduction type, an active layer, and a second semiconductor layer of a second conduction type are included in this order; a photodetection layer; and a plurality of light absorption layers provided on the corresponding position of antinodes or nodes of standing waves of light output from the active layer.