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:
Nov. 11, 2014
Filed:
Apr. 30, 2013
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Jean-Michel Gerard, Saint-Martin-d'Uriage, FR;
Julien Claudon, Saint-Martin-le-Vinoux, FR;
Giuseppe Leo, Fontenay-sous-Bois, FR;
Alessio Andronico, Charenton-le-Pont, FR;
Mathieu Munsch, Mulhouse, FR;
Abstract
A laser device for emitting THz waves includes a heterostructure with a substantially cylindrical shape including a first layer in an optically nonlinear semiconductor material including emitters to emit in two whispering gallery modes that are confined in the first layer and enabling the generation within the first layer of radiation in an electromagnetic THz whispering gallery mode, a second and a third layer in a semiconductor material each presenting an optical index that is smaller than the index of the material used for the first layer and a metal layer situated at one end of the heterostructure. The heterostructure includes in its center a hole with a substantially cylindrical shape extending over the entire height of the heterostructure.