微镜的辐射压力冷却和光机械不稳定性
O Arcizet1, P-F Cohadon, T Briant
1Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Case 74, 4 place Jussieu, F-75252 Paris Cedex 05, France.
Nature
|November 3, 2006
概括
高功率的光学干扰仪面临着辐射压力带来的挑战. 这项研究证明了微机械共振器中的光机械冷却和不稳定性,为量子基本状态实验铺平了道路.
科学领域:
- 视觉机械学 视觉机械学
- 量子光学是一种量子光学.
- 精确度测量 精确度测量 精确度测量
背景情况:
- 光学干扰度可以实现高灵敏度的移位检测.
- 需要更高的光学功率来提高灵敏度,但引入辐射压力效应.
- 由非线性合引起的光机械不稳定性,可以限制干扰仪的稳定性.
研究的目的:
- 研究辐射压力对微机械共振器的动态影响.
- 使用洞内辐射压力来证明对共振器动态的控制.
- 探索微机械系统中达到量子基本状态的潜力.
主要方法:
- 使用微机械共振器作为高精度光学腔中的镜子.
- 监控高灵敏度的共振器位移.
- 与腔体共振相对变化的激光解调,以诱导辐射压力效应.
主要成果:
- 通过内腔辐射压力,观察到微共振器的显著降温到10凯尔文.
- 证明了相反激光解调的高效加热.
- 在共振器中诱导了辐射压力驱动的不稳定性.
结论:
- 内腔辐射压力提供了一个冷却微机械共振器的机制.
- 视力机械不稳定性可以诱导和潜在的控制.
- 进一步的研究可能能够观察微机械共振器的量子基本状态.
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