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. 29, 2009
Filed:
Mar. 25, 2008
Susumu Noda, Uji, JP;
Jun-ichi Kashiwagi, Katanu, JP;
Dai Ohnishi, Kyoto, JP;
Wataru Kunishi, Kyoto, JP;
Susumu Noda, Uji, JP;
Jun-ichi Kashiwagi, Katanu, 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 semiconductor substrate, a main laser section and a reflection film. The main laser section includes a lower cladding layer, an active layer, a two-dimensional photonic crystal layer, an upper cladding layer and a contact layer, which are all deposited on the semiconductor substrate. The reflection film, which surrounds the entire side surfaces of the main laser section, is made of a thin titanium-gold film deposited by sputtering.