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:
Jul. 23, 2024
Filed:
Nov. 23, 2020
Kazuma Izumiya, Miyagi, JP;
Naoto Jikutani, Miyagi, JP;
Kazuhiro Harasaka, Miyagi, JP;
Ryoichiro Suzuki, Miyagi, JP;
Kazuma Izumiya, Miyagi, JP;
Naoto Jikutani, Miyagi, JP;
Kazuhiro Harasaka, Miyagi, JP;
Ryoichiro Suzuki, Miyagi, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A surface emitting laser includes a first reflecting mirror; a second reflecting mirror; an active region between the first reflecting mirror and the second reflecting mirror. The first reflecting mirror and the second reflecting mirror each include a plurality of low refractive-index layers having a first refractive index; and a plurality of high refractive-index layers having a second refractive index higher than the first refractive index. The plurality of low refractive-index layers and the plurality of high refractive-index layers are alternated one after another. The plurality of high refractive-index layers of the first reflecting mirror includes a first layer; and a second layer having a higher thermal diffusion property in an in-plane direction than the first layer.