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), 181105-[3pp]. (doi:10.1063/1.3586771).


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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 x 10^7 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
Digital Object Identifier (DOI): doi:10.1063/1.3586771
ISSNs: 0003-6951 (print)
Related URLs:
Subjects: Q Science > QC Physics
Organisations: Optoelectronics Research Centre, Electronics & Computer Science
ePrint ID: 191179
Date :
Date Event
May 2011Published
Date Deposited: 17 Jun 2011 10:28
Last Modified: 22 Apr 2017 01:51
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/191179

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