An interferometric sensor for satellite drag-free control

Clive Speake, Stuart Aston

Research output: Contribution to journalArticle

28 Citations (Scopus)


We describe a compact interferometer, under development at the University of Birmingham, that could be employed as a zero-stiffness sensor for drag-free satellites. A prototype bench-top polarization-based homodyne interferometer is discussed that achieves a shot-noise limited displacement sensitivity of 3 x 10(-12) In Hz(1/2) above 60 Hz. We discuss a wavelength modulation technique that will render the interferometer more robust as it enables the absolute difference in interferometric armlengths to be determined.
Original languageEnglish
Pages (from-to)S269-S277
JournalClassical and Quantum Gravity
Early online date26 Apr 2005
Publication statusPublished - 26 Apr 2005


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