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:
Oct. 05, 2010
Filed:
Apr. 26, 2007
David A. Fattal, Mountain View, CA (US);
Mihail Sigalas, Palo Alto, CA (US);
Raymond G. Beausoleil, Redmond, WA (US);
David A. Fattal, Mountain View, CA (US);
Mihail Sigalas, Palo Alto, CA (US);
Raymond G. Beausoleil, Redmond, WA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Various aspects of the present invention are directed to light-emitting devices including a photonic grating configured to extract spontaneous emission of electromagnetic radiation from a light-emitting structure. In one aspect of the present invention, a light-emitting device includes a light-emitting structure having an active region designed to emit electromagnetic radiation with a selected frequency. The light-emitting device further includes a photonic grating spaced from the active region of the light-emitting structure. The photonic grating is capable of supporting a leaky guided mode that extends within the active region of the light-emitting structure. The leaky guided mode has a mode frequency approximately equal to the selected frequency emitted by the active region and a mode wavevector that is approximately equal to a reciprocal lattice vector of the photonic grating.