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31 August 2015 Raman sensing in microresonators
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Abstract
High-quality whispering-gallery-mode optical resonators have garnered interest in particle sensing for a variety of applications. Here, we further explore the idea of using microresonators to enhance single-particle detection and identification by monitoring the Raman scattering from a particle adhered to a silica micro-sphere. A tunable diode laser is critically coupled into a resonant mode of the micro-sphere resonator, allowing circulating power to build up within the cavity for enhanced interaction with the attached particle. Experimental results of single particle Raman scattering in microsphere resonators are presented.
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Corey Janisch, Alexander Cocking, Lan Yang, and Zhiwen Liu "Raman sensing in microresonators", Proc. SPIE 9584, Ultrafast Nonlinear Imaging and Spectroscopy III, 95840O (31 August 2015); https://doi.org/10.1117/12.2188947
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