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:
Dec. 31, 2013
Filed:
Aug. 10, 2012
Susumu Noda, Kyoto, JP;
Seita Iwahashi, Kyoto, JP;
Toshiyuki Nobuoka, Fukuyama, JP;
Takui Sakaguchi, Kyoto, JP;
Eiji Miyai, Kyoto, JP;
Wataru Kunishi, Kyoto, JP;
Dai Ohnishi, Otsu, JP;
Kazuya Nagase, Kawanishi, JP;
Yoshikatsu Miura, Kyoto, JP;
Susumu Noda, Kyoto, JP;
Seita Iwahashi, Kyoto, JP;
Toshiyuki Nobuoka, Fukuyama, JP;
Takui Sakaguchi, Kyoto, JP;
Eiji Miyai, Kyoto, JP;
Wataru Kunishi, Kyoto, JP;
Dai Ohnishi, Otsu, JP;
Kazuya Nagase, Kawanishi, JP;
Yoshikatsu Miura, Kyoto, JP;
Kyoto University, Kyoto-shi, JP;
Rohm Co., Ltd., Kyoto-shi, JP;
Abstract
A photonic crystal surface emission laser includes an active layer, and a photonic crystal layer made of a plate-shaped slab provided with modified refractive index area having a refractive index different from that of the slab, the modified refractive index areas being arranged on each of the lattice points of a first rhombic-like lattice and a second rhombic-like lattice in which both diagonals are mutually parallel and only one diagonal is of a different length, wherein a, a, a, and n satisfy the following inequality: