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Proceedings Paper

Interferometric sensing for drag-free satellites
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Paper 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.

Paper Details

Date Published: 29 September 2004
PDF: 9 pages
Proc. SPIE 5500, Gravitational Wave and Particle Astrophysics Detectors, (29 September 2004); doi: 10.1117/12.551677
Show Author Affiliations
Clive C. Speake, Univ. of Birmingham (United Kingdom)
Stuart Mark Aston, Univ. of Birmingham (United Kingdom)

Published in SPIE Proceedings Vol. 5500:
Gravitational Wave and Particle Astrophysics Detectors
James Hough; Gary H. Sanders, Editor(s)

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