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arXiv 0711.2252physics.opticsphysics.chem-ph
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微谐振器中laser诱导热散射功率阈值和反斯托克斯频率的渐近估计

Asymptotic estimations of power thresholds and anti-Stokes frequency of laser induced thermal scattering in microresonators

M. V. Jouravlev

摘要:

本文推导了平面波照射下石英微谐振器中激光诱导热散射阈值强度的渐近表达式。本文计算了高Q值球形微谐振器的反斯托克斯热组合频率。考虑了非线性相互作用的三模区。考虑了一种泵浦驱动模式、两种信号模式和一种温度弛豫模式,满足了依赖于形态的输入和输出谐振。在形态依赖共振下,激光诱导热散射存在较低的功率阈值。

英文摘要:

A derivation of the asymptotic expressions for the threshold intensity of laser induced thermal scattering in silica microresonator when illuminated with a plane wave is present. The calculation of anti-Stokes thermal combination frequencies are made for the spherical high Q-factor microresonators. The three modes regime of nonlinear interaction is considered. One pump-driven, two signal modes, and one mode of temperature relaxation are taken into account, satisfying morphology-dependent input and output resonances. There are low power thresholds for laser induced thermal scattering at morphology dependent resonances.

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