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:
Feb. 19, 2013
Filed:
Nov. 12, 2009
Sylvain Schwartz, Saint Remy les Chevreuse, FR;
Gilles Feugnet, Palaiseau, FR;
Francois Gutty, Chatellerault, FR;
Etienne Bonnaudet, St Georges les Baillargeaux, FR;
Mehdi Alouini, Saint Martin de Brethencourt, FR;
Jean-paul Pocholle, La Norville, FR;
Sylvain Schwartz, Saint Remy les Chevreuse, FR;
Gilles Feugnet, Palaiseau, FR;
Francois Gutty, Chatellerault, FR;
Etienne Bonnaudet, St Georges les Baillargeaux, FR;
Mehdi Alouini, Saint Martin de Brethencourt, FR;
Jean-Paul Pocholle, La Norville, FR;
Thales, Neuilly sur Seine, FR;
Abstract
The general field of the invention is that of gyrolasers comprising at least one ring-shaped optical cavity comprising at least three mirrors, a solid state amplifying medium pumped by a laser diode whose optical emission power is determined by a current supply source, the cavity and the amplifying medium being such that two so-called contra-rotating optical modes propagate in opposite directions to each other within the said optical cavity, the gyrolaser being a class B gyrolaser, the gyrolaser also comprising means of measuring the difference in optical frequency existing between the two optical modes. The gyrolaser comprises means of measuring the total optical power circulating in the optical cavity and first means of control of the current delivered by the supply source in such a way as to maintain the total optical power substantially constant in a narrow spectral band centred on the relaxation frequency of the laser.