High sensitivity optomechanical reference accelerometer over 10 kHz
- Resource Type
- Working Paper
- Authors
- Cervantes, Felipe Guzman; Kumanchik, Lee; Pratt, Jon; Taylor, Jacob
- Source
- Applied Physics Letters 104, 221111 (2014)
- Subject
- Physics - Optics
General Relativity and Quantum Cosmology
Physics - Geophysics
Physics - Instrumentation and Detectors
Quantum Physics
- Language
We present an optically-detected mechanical accelerometer that achieves a sensitivity of 100 ng/rtHz over a bandwidth of 10kHz 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 200 am/rtHz, and whose length determination enables traceability to the International System of Units (SI). 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.