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21 November 2017 A heterodyne interferometer for high resolution translation and tilt measurement as optical readout for the LISA inertial sensor
Thilo Schuldt, Hans-Jürgen Kraus, Dennis Weise, Claus Braxmaier, Achim Peters, Ulrich Johann
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Proceedings Volume 10567, International Conference on Space Optics — ICSO 2006; 105673M (2017) https://doi.org/10.1117/12.2308065
Event: International Conference on Space Optics 2006, 2006, Noordwijk, Netherlands
Abstract
The space-based gravitational wave detector LISA (Laser Interferometer Space Antenna) requires a high performance position sensor in order to measure the translation and tilt of the free flying test mass with respect to the LISA optical bench. Here, we present a mechanically highly stable and compact setup of a heterodyne interferometer combined with differential wavefront sensing for the tilt measurement which serves as a demonstrator for an optical readout of the LISA test mass position. First results show noise levels below 1 nm/√Hz and 1 μrad/√Hz, respectively, for frequencies < 10−3 Hz.
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Thilo Schuldt, Hans-Jürgen Kraus, Dennis Weise, Claus Braxmaier, Achim Peters, and Ulrich Johann "A heterodyne interferometer for high resolution translation and tilt measurement as optical readout for the LISA inertial sensor", Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 105673M (21 November 2017); https://doi.org/10.1117/12.2308065
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KEYWORDS
Interferometers
Nanoimprint lithography
Mirrors
Heterodyning
Beam splitters
Photodiodes
Sensors
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