光背action对光热弛豫速率的影响
Optical back-action on the photothermal relaxation rate
摘要：
光热效应可以改变光学腔的响应，例如，通过诱导自锁行为或不稳定的异常。这些效应的后果通常被认为是寄生的，并且通常导致腔的有限的操作性能。然而，尽管光热参数很重要，但通常很难精确表征。在这项工作中，我们使用一个光学腔强耦合到光热效应的实验观察光热弛豫速率的光学反作用。这种效应，让人想起腔光学机械系统中的辐射压力引起的光学弹簧效应，使用光学失谐作为精细控制来改变光热弛豫过程。系统的光热弛豫速率可以相应地修改超过一个数量级。这种方法提供了一个机会，以获得精确的腔的参数的原位估计，在一种方式，是与广泛的光学谐振器平台兼容。通过这种反作用效应，我们能够确定自然光热弛豫速率和有效的腔镜热导率与前所未有的分辨率。
英文摘要：
Photothermal effects can alter the response of an optical cavity, for example, by inducing self-locking behavior or unstable anomalies. The consequences of these effects are often regarded as parasitic and generally cause limited operational performance of the cavity. Despite their importance, however, photothermal parameters are usually hard to characterize precisely. In this work we use an optical cavity strongly coupled to photothermal effects to experimentally observe an optical back-action on the photothermal relaxation rate. This effect, reminiscent of the radiation-pressure-induced optical spring effect in cavity optomechanical systems, uses optical detuning as a fine control to change the photothermal relaxation process. The photothermal relaxation rate of the system can be accordingly modified by more than an order of magnitude. This approach offers an opportunity to obtain precise in-situ estimations of the parameters of the cavity, in a way that is compatible with a wide range of optical resonator platforms. Through this back-action effect we are able to determine the natural photothermal relaxation rate and the effective thermal conductivity of the cavity mirrors with unprecedented resolution.
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