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arXiv · 2305.05300

Multi-mode Perturbation Modelling for Cavity Polygon and Star Modes

Saeed Farajollahi·Zhiwei Fang·Jintian Lin·Shahin Honari·Ya Cheng·Tao Lu
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Abstract

Polygon and star modes enable unidirectional emission and single-frequency lasing in whispering gallery microcavities. To understand their properties and facilitate design, we have adopted both two-dimensional and three-dimensional full-wave perturbation methods to simulate these modes. Our simulation demonstrates that a tapered optical fiber can be used as a weak perturbation to coherently combine multiple whispering gallery modes into a polygon or star mode. Additionally, our simulation predicts an optical quality factor as high as $10^7$ for the polygon modes, which is in good agreement with the experiment results.

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Saeed Farajollahi, Zhiwei Fang, Jintian Lin, Shahin Honari, Ya Cheng, Tao Lu. 2023-05-09. Multi-mode Perturbation Modelling for Cavity Polygon and Star Modes. https://arxiv.org/abs/2305.05300

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