Physics – Optics
Scientific paper
2004-06-10
Optics Letters 30 (2005) 284
Physics
Optics
submitted
Scientific paper
10.1364/OL.30.000284
We describe an experiment showing 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 dual cavity containing a type II phase matched $\chi^{(2)}$ crystal pumped at the fundamental frequency $\omega_0$. The pump beam generates in the cavity a second harmonic mode at frequency $2\omega_0$ which acts as a pump for frequency degenerate type II parametric down conversion. Under operating conditions which are precisely symmetric with respect to the ordinary and extraordinary components of the fundamental wave, we have observed a breaking of the symmetry on the intensities of these two waves in agreement with the theoretical predictions.
Coudreau Thomas
Fabre Claude
Laurat Julien
Longchambon Laurent
Treps Nicolas
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