High sensitivity optomechanical reference accelerometer over 10 kHz

Felipe Guzmán Cervantes; Lee Kumanchik; Jon Pratt; Jacob M. Taylor

doi:10.1063/1.4881936

High sensitivity optomechanical reference accelerometer over 10 kHz

Felipe Guzmán Cervantes, Lee Kumanchik, Jon Pratt, Jacob M. Taylor

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

We present an optically detected mechanical accelerometer that achieves a sensitivity of 100 ngn/√Hz over a bandwidth of 10 kHz and is traceable. We have incorporated a Fabry-Pérot fiber-optic micro-cavity that is currently capable of measuring the test-mass displacement with sensitivities of 200 am/√Hz, and whose length determination enables traceability to the International System of Units. The compact size and high mQ-product achieved combined with the high sensitivity and simplicity of the implemented optical detection scheme highlight our device and this category of accelerometers, outlining a path for high sensitivity reference acceleration measurements and observations in seismology and gravimetry.

Original language	English (US)
Article number	221111
Journal	Applied Physics Letters
Volume	104
Issue number	22
DOIs	https://doi.org/10.1063/1.4881936
State	Published - Jun 2 2014
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AB - We present an optically detected mechanical accelerometer that achieves a sensitivity of 100 ngn/√Hz over a bandwidth of 10 kHz and is traceable. We have incorporated a Fabry-Pérot fiber-optic micro-cavity that is currently capable of measuring the test-mass displacement with sensitivities of 200 am/√Hz, and whose length determination enables traceability to the International System of Units. The compact size and high mQ-product achieved combined with the high sensitivity and simplicity of the implemented optical detection scheme highlight our device and this category of accelerometers, outlining a path for high sensitivity reference acceleration measurements and observations in seismology and gravimetry.

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