High Sensitivity Optomechanical Reference Accelerometer over 10 kHz
Abstract
We present an optically detected mechanical accelerometer that achieves a sensitivity of 100 ng(sub n)/= real number 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 200 am/ real number 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 05, 2014
- Accession Number
- ADA622559
Entities
People
- Felipe G. Cervantes
- Jacob M. Taylor
- Jon Pratt
- Lee Kumanchik
Organizations
- University of Copenhagen