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Temperature measurement and stabilization in a birefringent whispering gallery mode resonator

2011; Optica Publishing Group; Volume: 19; Issue: 15 Linguagem: Inglês

10.1364/oe.19.014495

1094-4087

Dmitry Strekalov, Robert J. Thompson, Lukas Baumgartel, Ivan S. Grudinin, N. Yu,

Mechanical and Optical Resonators

Temperature measurement with nano-Kelvin resolution is demonstrated at room temperature, based on the thermal dependence of an optical crystal anisotropy in a high quality whispering gallery mode resonator. As the resonator's TE and TM modes frequencies have different temperature coefficients, their differential shift provides a sensitive measurement of the temperature variation, which is used for active stabilization of the temperature.