Madiot Guilhem, Barbay Sylvain, Braive Rémy
Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Saclay, 91120 Palaiseau, France.
Université de Paris, F-75006 Paris, France.
Nano Lett. 2021 Oct 13;21(19):8311-8316. doi: 10.1021/acs.nanolett.1c02879. Epub 2021 Sep 22.
Vibrational resonance is a generic phenomenon found in many different bistable systems whereby a weak low-frequency signal is amplified by use of an additional nonresonant high-frequency modulation. The realization of weak signal enhancement in integrated nonlinear optical nanocavities is of great interest for nanophotonic applications where optical signals may be of low power. Here, we report experimental observation of vibrational resonance in a thermo-optically bistable photonic crystal optomechanical resonator with an amplification up to +16 dB. The characterization of the bistability can interestingly be done using a mechanical resonance of the membrane, which is submitted to a strong thermoelastic coupling with the cavity.
振动共振是一种在许多不同双稳系统中发现的普遍现象，通过使用额外的非共振高频调制来放大微弱的低频信号。在集成非线性光学纳米腔中实现弱信号增强对于光信号功率可能较低的纳米光子学应用具有重要意义。在此，我们报告了在一个热光双稳光子晶体光机械谐振器中对振动共振的实验观测，放大倍数高达 +16 dB。有趣的是，双稳性的表征可以利用膜的机械共振来完成，该膜与腔存在强热弹性耦合。
