Presentation Information
[8a-N402-6]Optically induced nonlinear mechanical response of a fiber-type microresonator
〇Hideki Arahari1, Motoki Asano1, Hiroshi Yamaguchi1, Hajime Okamoto1 (1.NTT Basic Res. Labs.)
Keywords:
Optomechanics,Optical microresonator,Nonlinear damping
A bottle-shaped fiber microresonator is an optomechanical resonator capable of exciting and detecting radial mechanical vibration modes (Radial Breathing Mode: RBM) via whispering gallery modes (WGMs) that circulate around the bottle structure. If strong nonlinearity can be induced in the mechanical response of this resonator, applications such as mechanical bistability and signal processing through active control of the dissipation rate become feasible. However, the bottle-shaped resonator exhibits only small mechanical displacements, making it difficult to generate nonlinearity arising from structural deformation. In this study, we attempt to observe nonlinear mechanical responses originating from strong optomechanical interactions, and we demonstrate the emergence of nonlinear damping effects.