Accession Number:

ADA622559

Title:

High Sensitivity Optomechanical Reference Accelerometer over 10 kHz

Descriptive Note:

Journal article

Corporate Author:

COPENHAGEN UNIV (DENMARK)

Report Date:

2014-06-05

Pagination or Media Count:

8.0

Abstract:

We present an optically detected mechanical accelerometer that achieves a sensitivity of 100 ngsub 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.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Optical Detection and Detectors
  • Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE