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Optomechanical Raman-Ratio Thermometry

Published

Author(s)

Katarina Cicak, Tom Purdy, Pen Li Yu, Nir Kampel, Bob Peterson, Raymond W. Simmonds, Cindy Regal

Abstract

The temperature dependence of the asymmetry between Stokes and anti-Stokes Raman scattering can be exploited for self-calibrating, optically-based thermometry. In the context of cavity optomechanics, we observe the cavity-enhanced scattering of light interacting with the standingwave drumhead modes of a Si3N4 membrane mechanical resonator. The ratio of the amplitude of Stokes to anti-Stokes scattered light is used to measure temperatures of optically cooled mechanical modes down the level of a few vibrational quanta. We demonstrate that the Raman-ratio technique is able to measure the physical temperature of our device over a range extending from cryogenic temperatures to within an order of magnitude of room temperature.
Citation
Physical Review Letters
Volume
92

Keywords

photon, optomechanics, raman

Citation

Cicak, K. , Purdy, T. , , P. , Kampel, N. , Peterson, B. , Simmonds, R. and Regal, C. (2015), Optomechanical Raman-Ratio Thermometry, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevA.92.031802 (Accessed September 22, 2021)
Created September 9, 2015, Updated November 10, 2018