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Comptes Rendus Physique
Volume 15, n° 10
pages 841-850 (décembre 2014)
Doi : 10.1016/j.crhy.2014.10.008
Towards a solid-state ring laser gyroscope
Vers un gyrolaser à état solide
 

Noad El Badaoui a, b, Bertrand Morbieu a, Philippe Martin b, Pierre Rouchon b, Jean-Paul Pocholle c, François Gutty c, Gilles Feugnet c, Sylvain Schwartz c,
a Thales Avionics, 40, rue de la Brelandière, BP 128, 86101 Châtellerault, France 
b Centre Automatique et Systèmes, Mines ParisTech, PSL Research University, 60, boulevard Saint-Michel, 75272 Paris cedex 06, France 
c Thales Research and Technology France, Campus Polytechnique, 1, avenue Augustin Fresnel, 91767 Palaiseau, France 

Corresponding author.
Abstract

In this paper, we report our recent progress towards a solid-state ring laser gyroscope (RLG), where mode competition is circumvented by active control of differential losses, and nonlinear effects are mitigated by longitudinal vibration of the gain medium. The resulting dynamics is significantly different from that of a classical helium–neon RLG, owing in particular to parametric resonances that occur when the Sagnac frequency is an integer multiple of the crystal vibration frequency. We describe the main experimental and theoretical results obtained so far, and the prospects of practical applications in the near future.

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Résumé

Nous décrivons dans cet article nos récents progrès vers la réalisation d'un gyrolaser à état solide. Dans ce dispositif, le problème de la compétition entre modes est résolu par un contrôle actif des pertes différentielles, et les effets non linéaires sont fortement atténués par la mise en vibration du milieu à gain. La dynamique d'un tel système est significativement différente de celle d'un gyrolaser à hélium–néon classique, en particulier à cause des résonances paramétriques qui surviennent lorsque la fréquence Sagnac est un multiple entier de la fréquence de vibration du cristal. Nous décrivons les principaux résultats expérimentaux et théoriques obtenus jusqu'ici et discutons les perspectives d'applications pratiques à court et moyen termes.

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Keywords : Ring laser gyroscope, Solid-state laser, Sagnac effect




© 2014  Published by Elsevier Masson SAS de la part de Académie des sciences.
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