Nonlinear heating and scattering in a single silicon nanostructure

Yu-Lung Tang; Chien-Hsuan Li; Junichi Takahara; Shi-Wei Chu

doi:10.1117/12.2582538

5 March 2021 Nonlinear heating and scattering in a single silicon nanostructure

Yu-Lung Tang, Chien-Hsuan Li, Junichi Takahara, Shi-Wei Chu

Proceedings Volume 11691, Silicon Photonics XVI; 1169117 (2021) https://doi.org/10.1117/12.2582538
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

We recently achieved n_2 ~10-1 μm^2/mW on a single silicon Mie resonator, i.e. five orders-of-magnitude improvement of silicon nonlinearity. Here we present the direct evidence quantitatively linking the nonlinearity to temperature rise with 10K precision, and unravel that the huge optical nonlinearity is due to nonlinear temperature rise, coupled with nonlinear absorption, resulting in 1000K increase with ~10 mW/μm^2 excitation. We developed corresponding numerical simulation tools that confirm our observations and can be adapted to explain general nanostructure heating.

Conference Presentation

Citation Download Citation

Yu-Lung Tang, Chien-Hsuan Li, Junichi Takahara, and Shi-Wei Chu "Nonlinear heating and scattering in a single silicon nanostructure", Proc. SPIE 11691, Silicon Photonics XVI, 1169117 (5 March 2021); https://doi.org/10.1117/12.2582538

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