Feedback-enhanced sensitivity in optomechanics: Surpassing the parametric instability barrier

Glen I. Harris; Ulrik L. Andersen; Joachim Knittel; Warwick P. Bowen

Feedback-enhanced sensitivity in optomechanics: Surpassing the parametric instability barrier

Glen I. Harris, Ulrik L. Andersen, Joachim Knittel, Warwick P. Bowen

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Abstract

The intracavity power, and hence sensitivity, of optomechanical sensors is commonly limited by parametric instability. Here we characterize the degradation of sensitivity induced by parametric instability in a micron-scale cavity optomechanical system. Feedback via optomechanical transduction and electrical gradient force actuation is applied to suppress the parametric instability. As a result a 5.4-fold increase in mechanical motion transduction sensitivity is achieved to a final value of 1.9×10^-18 mHz^-1/2.

Original language	English
Journal	Physical Review A
Volume	85
Issue number	6
Pages (from-to)	061802
ISSN	2469-9926
Publication status	Published - 2012

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title = "Feedback-enhanced sensitivity in optomechanics: Surpassing the parametric instability barrier",

abstract = "The intracavity power, and hence sensitivity, of optomechanical sensors is commonly limited by parametric instability. Here we characterize the degradation of sensitivity induced by parametric instability in a micron-scale cavity optomechanical system. Feedback via optomechanical transduction and electrical gradient force actuation is applied to suppress the parametric instability. As a result a 5.4-fold increase in mechanical motion transduction sensitivity is achieved to a final value of 1.9×10-18 mHz-1/2.",

author = "Harris, {Glen I.} and Andersen, {Ulrik L.} and Joachim Knittel and Bowen, {Warwick P.}",

note = "{\textcopyright}2012 American Physical Society",

year = "2012",

language = "English",

volume = "85",

pages = "061802",

journal = "Physical Review A (Atomic, Molecular and Optical Physics)",

issn = "2469-9926",

publisher = "American Physical Society",

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TY - JOUR

T1 - Feedback-enhanced sensitivity in optomechanics

T2 - Surpassing the parametric instability barrier

AU - Harris, Glen I.

AU - Andersen, Ulrik L.

AU - Knittel, Joachim

AU - Bowen, Warwick P.

PY - 2012

Y1 - 2012

N2 - The intracavity power, and hence sensitivity, of optomechanical sensors is commonly limited by parametric instability. Here we characterize the degradation of sensitivity induced by parametric instability in a micron-scale cavity optomechanical system. Feedback via optomechanical transduction and electrical gradient force actuation is applied to suppress the parametric instability. As a result a 5.4-fold increase in mechanical motion transduction sensitivity is achieved to a final value of 1.9×10-18 mHz-1/2.

AB - The intracavity power, and hence sensitivity, of optomechanical sensors is commonly limited by parametric instability. Here we characterize the degradation of sensitivity induced by parametric instability in a micron-scale cavity optomechanical system. Feedback via optomechanical transduction and electrical gradient force actuation is applied to suppress the parametric instability. As a result a 5.4-fold increase in mechanical motion transduction sensitivity is achieved to a final value of 1.9×10-18 mHz-1/2.

M3 - Journal article

VL - 85

SP - 061802

JO - Physical Review A (Atomic, Molecular and Optical Physics)

JF - Physical Review A (Atomic, Molecular and Optical Physics)

SN - 2469-9926

IS - 6

ER -

Feedback-enhanced sensitivity in optomechanics: Surpassing the parametric instability barrier

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