Application of dynamic line narrowing in resonant optical sensing |
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| Authors: | Liu Fenfei Lan Shoufeng Hossein-Zadeh Mani |
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| Institution: | Department of Physics and Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87131, USA. |
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| Abstract: | We propose a dynamic operational mode and the resulting dynamic line narrowing as a method for enhancing the resolution and the detection limit of high-quality (high-Q) resonant optical sensors. Using a silica microtoroid as an experimental platform, we demonstrate that dynamic line narrowing through the thermo-optic effect can significantly improve the detection limit in both resonant shift and resonance splitting operating modes. |
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