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:
Jan. 07, 2014
Filed:
Oct. 15, 2009
Francois Daniel Balembois, Boissy le Sec, FR;
Patrick Marcel Georges, Noisy le Roi, FR;
Damien Sangla, Antony, FR;
Julien Didierjean, Caluire, FR;
Francois Daniel Balembois, Boissy le Sec, FR;
Patrick Marcel Georges, Noisy le Roi, FR;
Damien Sangla, Antony, FR;
Julien Didierjean, Caluire, FR;
Fibercryst, Villeurbanne, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Universite Claude Bernard Lyon 1, Villeurbanne, FR;
Abstract
An optical amplifier for pulsed laser with short or ultra-short and energetic pulses includes an optical pumping source for generating a pump wave, an elongate amplifying medium including an input interface for receiving an optical signal to be amplified, the medium being able to amplify the optical signal propagating along the amplifying medium and to extract an amplified signal and an optical system for coupling the pump wave in the amplifying medium so as to pump the amplifying medium longitudinally. The amplifying medium has a minimum transverse dimension φand the optical system focuses the pump wave inside the gain medium, the focused pump wave having a transverse dimension φwhich is smaller than the dimension φof the medium and a smaller numerical aperture than the numerical aperture of the medium, so that the pump wave propagates freely over a part of the amplifying medium and then in a confined manner over a part of the amplifying medium.