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arXiv · 1602.02807

Observation of nonlinear thermal optical dynamics in a chalcogenide nanobeam cavity

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

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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Yue Sun, Thomas P. White, Duk-Yong Choi, Andrey A. Sukhorukov. 2016-02-08. Observation of nonlinear thermal optical dynamics in a chalcogenide nanobeam cavity. https://arxiv.org/abs/1602.02807

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