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:
Oct. 30, 2012
Filed:
Aug. 18, 2009
Susumu Noda, Kyoto, JP;
Seita Iwahashi, Kyoto, JP;
Yoshitaka Kurosaka, Hamamatsu, JP;
Kyosuke Sakai, Sapporo, JP;
Eiji Miyai, Kyoto, JP;
Dai Ohnishi, Otsu, JP;
Wataru Kunishi, Kyoto, JP;
Susumu Noda, Kyoto, JP;
Seita Iwahashi, Kyoto, JP;
Yoshitaka Kurosaka, Hamamatsu, JP;
Kyosuke Sakai, Sapporo, JP;
Eiji Miyai, Kyoto, JP;
Dai Ohnishi, Otsu, JP;
Wataru Kunishi, Kyoto, JP;
Japan Science and Technology Agency, Kawaguchi, JP;
Abstract
A two-dimensional photonic crystal laser light is provided. The two-dimensional photonic crystal laser includes a two-dimensional photonic crystal made of a plate-shaped member provided with a periodic arrangement of identically-shaped modified refractive index areas having a refractive index different from that of the plate-shaped member; and an active layer provided on one side of the two-dimensional photonic crystal. The modified refractive index areas are arranged at lattice points of a lattice with a same period at least in two directions; each modified refractive index area is shaped so that a feedback strength is different with respect to directions of two primitive lattice vectors of the lattice; the two-dimensional photonic crystal has a periodic structure of a supercell, which contains a plurality of lattice points; and the sum of the feedback strengths by all modified refractive index areas in the supercell is identical in each direction of the two primitive lattice vectors.