Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/69675
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Type: Journal article
Title: High-sensitivity three-mode optomechanical transducer
Author: Zhao, C.
Fang, Q.
Susmithan, S.
Miao, H.
Ju, L.
Fan, Y.
Blair, D.
Hosken, D.
Munch, J.
Veitch, P.
Slagmolen, B.
Citation: Physical Review A, 2011; 84(6):1-6
Publisher: American Physical Soc
Issue Date: 2011
ISSN: 1050-2947
1094-1622
Statement of
Responsibility: 
C. Zhao, Q. Fang, S. Susmithan, H. Miao, L. Ju, Y. Fan, D. Blair, D. J. Hosken, J. Munch, P. J. Veitch and B. J. J. Slagmolen
Abstract: Three-mode optomechanical interactions have been predicted to allow the creation of very high sensitivity transducers in which very strong optical self-cooling and strong optomechanical quantum entanglement are predicted. Strong coupling is achieved by engineering a transducer in which both the pump laser and a single signal sideband frequency are resonantly enhanced. Here we demonstrate that very high sensitivity can be achieved in a very simple system consisting of a Fabry-Perot cavity with CO₂ laser thermal tuning. We demonstrate a displacement sensitivity of ∼1×10⁻¹⁷ m/√Hz, which is sufficient to observe a thermally excited acoustic mode in a 5.6 kg sapphire mirror with a signal-to-noise ratio of more than 20 dB. It is shown that a measurement sensitivity of ∼2×10⁻²⁰ m/√Hz limited by the quantum shot noise is achievable with optimization of the cavity parameters.
Rights: ©2011 American Physical Society
RMID: 0020115633
DOI: 10.1103/PhysRevA.84.063836
Appears in Collections:IPAS publications
Environment Institute publications

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