Finite direct phonon-phonon coupling in a two-mirror parametrically assisted optomechanical cavity mixes a weakly participating collective mode into the optically visible spectrum, rendering a third resonance resolvable.
In the high-temperature limit KBT ≫ ℏω m, we use coth( ℏω/ 2KBT ) = 2 KBT / ℏω
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Phonon-phonon interaction as a control knob for multimode splitting in a two mirror parametrically assisted optomechanical cavity
Finite direct phonon-phonon coupling in a two-mirror parametrically assisted optomechanical cavity mixes a weakly participating collective mode into the optically visible spectrum, rendering a third resonance resolvable.