Kleckner Dustin, Pepper Brian, Jeffrey Evan, Sonin Petro, Thon Susanna M, Bouwmeester Dirk
Department of Physics, University of California, Santa Barbara, California 93106, USA.
Opt Express. 2011 Sep 26;19(20):19708-16. doi: 10.1364/OE.19.019708.
We report on the development of optomechanical "trampoline" resonators composed of a tiny SiO(2)/Ta(2)O(5) dielectric mirror on a silicon nitride micro-resonator. We observe optical finesses of up to 4 × 10(4) and mechanical quality factors as high as 9 × 10(5) in relatively massive (~100 ng) and low frequency (10-200 kHz) devices. This results in a photon-phonon coupling efficiency considerably higher than previous Fabry-Perot-type optomechanical systems. These devices are well suited to ultra-sensitive force detection, ground-state optical cooling experiments, and demonstrations of quantum dynamics for such systems.
我们报告了由氮化硅微谐振器上的微小SiO₂/Ta₂O₅介质镜组成的光机械“蹦床”谐振器的研发情况。我们在相对较大质量（约100 ng）和低频（10 - 200 kHz）的器件中观察到高达4×10⁴的光学精细度以及高达9×10⁵的机械品质因数。这导致光子 - 声子耦合效率大大高于先前的法布里 - 珀罗型光机械系统。这些器件非常适合超灵敏力检测、基态光学冷却实验以及此类系统的量子动力学演示。
