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:
Sep. 29, 2026
Filed:
Aug. 17, 2021
Sony Group Corporation, Tokyo, JP;
Tomomasa Watanabe, Tokyo, JP;
Mikihiro Yokozeki, Tokyo, JP;
Hiroshi Nakajima, Tokyo, JP;
Daiji Kasahara, Tokyo, JP;
SONY GROUP CORPORATION, Tokyo, JP;
Abstract
A Provided is a vertical cavity surface emitting laser element that includes a first DBR, a second BR, an active layer, and a tunnel junction layer. The first DBR and the second DBR reflects light of the wavelength. The active layer is disposed between the first DBR and the second DBR. The tunnel junction layer is disposed between the first DBR and the active layer and forms a tunnel junction. Respective layers between the first DBR and the second DBR have an inner peripheral region that is on an inner peripheral side as viewed from a direction perpendicular to a layer surface, and an outer peripheral region surrounding the inner peripheral region, ions being implanted into the outer peripheral region of the tunnel junction layer, the outer peripheral region having a lower carrier concentration and a larger electric resistance than the inner peripheral region of the tunnel junction layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile