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arXiv 1602.02807physics.optics
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硫族化物纳米束腔中非线性热光学动力学的观测

Observation of nonlinear thermal optical dynamics in a chalcogenide nanobeam cavity

Yue Sun, Thomas P. White, Duk-Yong Choi, Andrey A. Sukhorukov

摘要:

我们提出了一个理论和实验分析的非线性热光效应悬硫系玻璃纳米梁腔。我们测量了在调制光输入下腔的功率相关的共振峰,并计算了腔的动态非线性热光响应。几个不同的非线性特性,包括修改后的光谱响应包含周期性条纹,一个临界波长跳变和饱和时间延迟调制频率快于热特征时间。我们发现,耦合到一个寄生的法布里-珀罗腔,使隔离的热平衡状态,导致在不连续的热光临界点。

英文摘要:

We present a theoretical and experimental analysis of nonlinear thermo-optic effects in suspended chalcogenide glass nanobeam cavities. We measure the power dependent resonance peaks and characterise the dynamic nonlinear thermo-optic response of the cavity under modulated light input. Several distinct nonlinear characteristics are identified, including a modified spectral response containing periodic fringes, a critical wavelength jump and saturated time delay for modulation frequency faster than the thermal characteristic time. We reveal that the coupling to a parasitic Fabry-Perot cavity enables isolated thermal equilibrium states resulting in the discontinuous thermo-optic critical point.

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