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. 29, 2019
Filed:
Feb. 24, 2017
Kyoto University, Kyoto-shi, Kyoto, JP;
Rohm Co., Ltd., Kyoto-shi, Kyoto, JP;
Hamamatsu Photonics K.k., Hamamatsu-shi, Shizuoka, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
KYOTO UNIVERSITY, Kyoto, JP;
ROHM CO., LTD., Kyoto, JP;
HAMAMATSU PHOTONICS K.K., Hamamatsu, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A two-dimensional photonic crystal surface emitting laser has, in a plate-shaped base body, a two-dimensional photonic crystal layer in which modified refractive index region pairs are periodically arranged and an active layer provided on one side of the base body, each of the modified refractive index region pairs including a first modified refractive index region and a second modified refractive index region having refractive indexes different from a refractive index of the base body, wherein an area of a planar shape of the first modified refractive index region is larger than or equal to an area of a planar shape of the second modified refractive index region, and a thickness of the first modified refractive index region is smaller than a thickness of the second modified refractive index region.