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29 September 2004 Interferometric sensing for drag-free satellites
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Abstract
We discuss a polarisation based homodyne interferometer that demonstrates a promising sensitivity of approximately 3x10-12 m/Hz1/2. This performance figure is limited above 10Hz by the resolution of the current analogue-to-digital converter (ADC). Sensitivity below 10Hz is influenced by environmental factors and / or noise inherent in the laser. We then describe the development of a compact interferometric sensor, undertaken at The University of Birmingham, discussing its application as a zero-stiffness sensor for drag-free satellites and suggest a geometry of electrostatic actuator also with zero-stiffness.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Clive C. Speake and Stuart Mark Aston "Interferometric sensing for drag-free satellites", Proc. SPIE 5500, Gravitational Wave and Particle Astrophysics Detectors, (29 September 2004); https://doi.org/10.1117/12.551677
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