Theoretical analysis demonstrates mechanical parametric instability in an optically levitated cavity mirror, highlighting the emergence of phonon lasing.
Optical Fabry–Perot cavity with a movable mirror is a paradigmatic optomechanical system. While usually the mirror is supported by a mechanical spring, it has been shown that it is possible to keep one of the mirrors in a stable equilibrium purely by optical levitation without any mechanical support. In this work, we expand previous studies of the nonlinear dynamics of such a system by demonstrating a possibility for mechanical parametric instability and the emergence of the “phonon laser” phenomenon.
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Jha et al. (2024) studied this question.
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