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Brillouin Lasing with a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>CaF</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>Whispering Gallery Mode Resonator

Brillouin Lasing with a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>CaF</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>Whispering Gallery Mode Resonator

Stimulated Brillouin scattering with both pump and Stokes beams in resonance with whispering gallery modes of an ultrahigh Q calcium fluoride resonator is demonstrated for the first time. The resonator is pumped with 1064 nm light and has 3 muW Brillouin lasing threshold. The scattering is observed due to the …