论文标题
基于光弹簧效果的空腔光学锁定方案
A cavity optomechanical locking scheme based on the optical spring effect
论文作者
论文摘要
我们提出了一种基于光弹簧效果的空腔光学机械设备的活跃长度稳定和频率失沟的新颖锁定方案。该方案可以用作磅 - 二甲锁定技术的替代方案，但相反，不需要在腔衰减率的时间尺度上处理信号处理。因此，它特别适合稳定微腔，在这种时间尺度可能非常快。误差信号是通过光学弹簧效应生成的，即纳米力学振荡器的引起依赖的频率转移，该纳米力学振荡器分散地耦合到腔内光场。我们解释了锁的功能原理，并根据带宽和增益曲线来表征其性能。可以在未解决的侧带机制中的各种光学机械系统中实施光弹簧锁定方案。
We present a novel locking scheme for active length-stabilization and frequency detuning of a cavity optomechanical device based on the optical spring effect. The scheme can be used as an alternative to the Pound-Drever-Hall locking technique but in contrast doesn't require signal processing on time-scales of the cavity decay rate. It is therefore particularly suited for stabilizing micro cavities, where this time-scale can be extremely fast. The error signal is generated through the optical spring effect, i.e. the detuning-dependent frequency-shift of a nanomechanical oscillator that is dispersively coupled to the intra-cavity light field. We explain the functional principle of the lock and characterize its performance in terms of bandwidth and gain profile. The optical spring locking scheme can be implemented without larger efforts in a wide variety of optomechanical systems in the unresolved sideband regime.
