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:
Feb. 01, 2011
Filed:
Dec. 18, 2007
Takayoshi Anan, Tokyo, JP;
Naofumi Suzuki, Tokyo, JP;
Kenichiro Yashiki, Tokyo, JP;
Masayoshi Tsuji, Tokyo, JP;
Hiroshi Hatakeyama, Tokyo, JP;
Kimiyoshi Fukatsu, Tokyo, JP;
Takeshi Akagawa, Tokyo, JP;
Takayoshi Anan, Tokyo, JP;
Naofumi Suzuki, Tokyo, JP;
Kenichiro Yashiki, Tokyo, JP;
Masayoshi Tsuji, Tokyo, JP;
Hiroshi Hatakeyama, Tokyo, JP;
Kimiyoshi Fukatsu, Tokyo, JP;
Takeshi Akagawa, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A surface emitting laser is provided with a first multilayer Bragg reflecting mirror including a first layer, a second multilayer Bragg reflecting mirror including a second layer, and an optical resonator unit that is held between these multilayer Bragg reflecting mirrors and includes an active layer. Further, the optical resonator unit contacts with the first layer and second layer respectively. The effective refraction index nof the resonator unit is larger than either the first layer or the second layer, and an optical length nL of the optical resonator unit has a relationship with an oscillating wavelength λ of the surface emitting laser to satisfy the following relationship: 0.5λ<nL≦0.7λ.