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首页> 外文期刊>Optics Letters >Radiation-pressure-driven vibrational modes in ultrahigh-Q silica microspheres
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Radiation-pressure-driven vibrational modes in ultrahigh-Q silica microspheres

机译:超高Q二氧化硅微球的辐射压力驱动振动模式

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摘要

Quantitative measurements of the vibrational eigenmodes in ultrahigh-Q silica microspheres are reported.The modes are excited via radiation-pressure-induced dynamical backaction of light confined in the optical whispering-gallery modes of the microspheres (i.e., via the parametric oscillation instability). Two families of modes are studied and their frequency dependence on sphere size investigated. The measured frequencies are in good agreement both with Lamb's theory and numerical finite-element simulation and are found to be proportional to the sphere's inverse diameter. In addition, the quality factors of the vibrational modes are studied.
机译:据报道,对超高Q二氧化硅微球的振动本征模式进行了定量测量,这些模式是通过辐射压引起的微球的光学耳语画廊模式的动态反作用(即通过参数振荡不稳定性)来激发的。研究了两种模式,并研究了它们对球体大小的频率依赖性。测得的频率与兰姆理论和数值有限元模拟都非常吻合,并且发现与球体的反直径成正比。另外,研究了振动模式的品质因数。

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