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High Sensitivity Optomechanical Reference Accelerometer Over 10 kHz



Felipe Guzman, Lee M. Kumanchik, Jon R. Pratt, Jacob M. Taylor


We present an optically detected mechanical accelerometer that achieves a sensitivity of 100 ng/√Hz over a bandwidth of 10 kHz and is traceable. We have incorporated a Fabry-Perot fiber-optic micro-cavity that is currently capable of measuring the test-mass displacement with sensitivities of 200am/√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
Applied Physics Letters


opto mechanic cavity Fabry Perot micro electro system feedback cooling backaction spectral density fiber fused silica quartz high q


Guzman, F. , Kumanchik, L. , Pratt, J. and Taylor, J. (2014), High Sensitivity Optomechanical Reference Accelerometer Over 10 kHz, Applied Physics Letters, [online], (Accessed April 14, 2024)
Created June 5, 2014, Updated November 10, 2018