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:
Mar. 18, 2008
Filed:
Oct. 27, 2005
Nobuaki Ueki, Kanagawa, JP;
Jun Sakurai, Kanagawa, JP;
Hiromi Otoma, Kanagawa, JP;
Masateru Yamamoto, Kanagawa, JP;
Nobuaki Ueki, Kanagawa, JP;
Jun Sakurai, Kanagawa, JP;
Hiromi Otoma, Kanagawa, JP;
Masateru Yamamoto, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A surface emitting semiconductor laser diode of a tunnel junction type includes a semiconductor substrate, a first reflector, a second reflector, an active region disposed in series between the first and second reflectors, and a tunnel junction region disposed in series between the first and second reflectors. The tunnel junction region includes a first semiconductor layer of a first conductive type and a second semiconductor layer of a second conductive type that forms a junction with the first semiconductor layer, the first semiconductor layer being composed of a supper-lattice layer that at least partially includes aluminum and is partially oxidized.