Lead silicate glass microsphere resonators with absorption-limited Q

Wang, Pengfei, Murugan, Ganapathy Senthil, Lee, Timothy, Feng, Xian, Semenova, Yuliya, Wu, Qiang, Loh, Wei, Brambilla, Gilberto, Wilkinson, James S. and Farrell, Gerald (2011) Lead silicate glass microsphere resonators with absorption-limited Q. Applied Physics Letters, 98 (18). p. 181105. ISSN 0003-6951

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Abstract

We report the fabrication and characterization of a lead-silicate glass microsphere resonator. We show that at the wavelengths near 1555 nm high Q modes can be efficiently excited from a 109 μm diameter lead-silicate glass microsphere via evanescent coupling using a tapered silica fiber with a waist diameter of 2 μm. Resonances with Q-factors as high as 0.9×107 were observed. This is very close to the theoretical material-limited Q-factor and is the highest Q-factor reported so far from a nonlinear glass microsphere.

Item Type:	Article
Subjects:	F300 Physics H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Ay Okpokam
Date Deposited:	26 May 2015 12:07
Last Modified:	12 Oct 2019 19:07
URI:	http://nrl.northumbria.ac.uk/id/eprint/22568

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