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:
Feb. 12, 2013
Filed:
Oct. 24, 2011
Toshimitsu Matsuu, Tokyo, JP;
Takeshi Uchida, Tokyo, JP;
Toshimitsu Matsuu, Tokyo, JP;
Takeshi Uchida, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a vertical cavity surface emitting laser that includes a plurality of laminated semiconductor layers including an active layer and that oscillates at a wavelength λ, wherein a resonator is formed by upper and lower multilayer reflecting mirrors has a structure that generates a longitudinal multimode, and the first active layer is arranged at a position shifted from a standing wave loop of the first longitudinal mode. According to the vertical cavity surface emitting laser capable of suppressing oscillation of the second longitudinal mode with a large gain and capable of single longitudinal mode oscillation based on the first longitudinal mode, the longitudinal mode spacing is narrowed by increasing the length of the resonator for single transverse mode oscillation at a high output, and the single longitudinal mode oscillation is possible even if longitudinal multimode oscillation occurs.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile