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Updated: Aug 19, 2026

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
Experimental evidence of spontaneous symmetry breaking in intracavity type II second-harmonic generation with triple
Laurent Longchambon1, Nicolas Treps, Thomas Coudreau
1Laboratoire Kastler Brossel, Université Pierre & Marie Curie, Case 74, 4 Place Jussieu, 75252 Paris Cedex 05, France.
Abstract:
We describe a spontaneous symmetry-breaking phenomenon between the intensities of the ordinary and extraordinary components of the fundamental field in intracavity type II harmonic generation. It is based on a triply resonant cavity containing a type II chi(2) crystal pumped at fundamental frequency omega0. The pump beam generates a second-harmonic mode at frequency 2omega0 that acts as a pump for frequency-degenerate type II parametric downconversion. Under operating conditions symmetric with respect to the ordinary and extraordinary components of the fundamental wave, we show a breaking of the symmetry of the intensities of these two waves.
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