Europhysics Letters (EPL)
Spontaneous Symmetry Breaking in a Ring Four-Wave Mixing Oscillator
G. Grynberg, M. Pinard, Philippe Verkerk
Abstract
We present the characteristics of the nondegenerate emission of a ring four-wave mixing oscillator. The nondegenerate symmetric mode where the two counterrotating beams have the same frequencies has never been observed. The oscillation always occurs on an asymmetric mode with beams of different frequencies propagating in opposite directions. Application to optical gyros is also discussed.