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. 11, 2014
Filed:
Jul. 31, 2012
Toshihide Sasaki, Miyagi, JP;
Kazuhiro Harasaka, Miyagi, JP;
Toshihide Sasaki, Miyagi, JP;
Kazuhiro Harasaka, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A surface-emitting laser device includes a lower reflector, a resonator structure having an active layer and an upper reflector on an inclined substrate, and an emission region emitting laser light enclosed by an electrode. The upper reflector includes a confinement structure having a current passing region enclosed by an oxide containing at least an oxide generated as a result of partial oxidation of a layer containing aluminum subject to selective oxidation, and a dielectric film formed within the emission region, the dielectric film at least enclosing a partial region including a center of the emission region. In viewing from a direction orthogonal to the emission region, a center of a region enclosed by the dielectric film is located at a position distant from the center of the emission region based on a size of the confinement structure relative to a direction orthogonal to an inclined axis of the inclined substrate.