The LTP interferometer and phasemeter
2004
Part of Gravitational waves. Proceedings, 5th Edoardo Amaldi Conference, Tirrenia, Italy, July 6-11, 2003
Published in:
- Class.Quant.Grav. 21 (2004) S581-S587
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Abstract: (IOP)
The LISA Technology Package (LTP), to be launched by ESA in 2006/2007, is a technology demonstration mission in preparation for the LISA space-borne gravitational wave detector. A central part of the LTP is the optical metrology package (heterodyne interferometer with phasemeter) which monitors the distance between two test masses with a noise level of 10 pm Hz?1/2between 3 mHz and 30 mHz. It has a dynamic range of >100 ?m without any actuators for the pathlength. In addition to the longitudinal measurements, it provides alignment measurements with an expected noise level of <10 nrad Hz?1/2. While the basic design has been described previously by Heinzelet al(2003Class. Quantum Grav.20S153?61), this paper gives new details on the laser stabilization, the phasemeter and recent prototype results.- talk: Tirrenia 2003/07/06
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