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The ST7 Interferometer

Robert Spero·Andreas Kuhnert
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Abstract

Two homodyne Michelson interferferometers aboard the LISA Pathfinder spacecraft will measure the the positions of two free-floating test masses, as part of the NASA ST7 mission. The interferometer is required to measure the separation between the test masses with sensitivity of 30 pm/sqrt(Hz) at 10 mHz. The readout scheme is described, error sources are analyzed, and experimental results are presented.

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Robert Spero, Andreas Kuhnert. 2003-10-07. The ST7 Interferometer. https://doi.org/10.1088/0264-9381%2F21%2F5%2F030

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