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. 02, 2010
Filed:
Mar. 25, 2008
Koji Otsuka, Kyoto, JP;
Eiji Miyai, Kyoto, JP;
Kyosuke Sakai, Kyoto, JP;
Yoshitaka Kurosaka, Kyoto, JP;
Susumu Noda, Uji, JP;
Dai Ohnishi, Kyoto, JP;
Wataru Kunishi, Kyoto, JP;
Koji Otsuka, Kyoto, JP;
Eiji Miyai, Kyoto, JP;
Kyosuke Sakai, Kyoto, JP;
Yoshitaka Kurosaka, Kyoto, JP;
Susumu Noda, Uji, JP;
Dai Ohnishi, Kyoto, JP;
Wataru Kunishi, Kyoto, JP;
Kyoto University, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
The two-dimensional photonic crystal surface emitting laser according to the present invention includes a number of main modified refractive index areas periodically provided in a two-dimensional photonic crystal and secondary structures each relatively located in a similar manner to each of the main modified refractive index areas. The location of the secondary structure is determined so that a main reflected light which is reflected by a main modified refractive index area and a secondary reflected light which is reflected by a secondary structure are weakened or intensified by interference.