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. 19, 2006
Filed:
May. 09, 2003
Chennupati Jagadish, Evatt, AU;
Michael Israel Cohen, O'Connor, AU;
Chennupati Jagadish, Evatt, AU;
Michael Israel Cohen, O'Connor, AU;
The Australian National University, Australian Capital Territory, AU;
Abstract
A vertical cavity surface emitting laser, including an active region, an electrical contact for injecting current into the active region in order to generate photons, and an aperture between the active region and the contact for restricting current flow into the active region. The aperture is sufficiently large in at least one transverse dimension for the active region to support multiple transverse modes, and the aperture and contact are configured to produce current crowding in the active region. The direction of photon emission from the laser is determined by the injection current selectively stimulating different transverse modes.