TY - JOUR
T1 - Readout for intersatellite laser interferometry: Measuring low frequency phase fluctuations of high-frequency signals with microradian precision
AU - Gerberding, Oliver
AU - Diekmann, Christian
AU - Kullmann, Joachim
AU - Troebs, Michael
AU - Bykov, Ioury
AU - Barke, Simon
AU - Brause, Nils Christopher
AU - Delgado, Juan Jose Esteban
AU - Schwarze, Thomas S.
AU - Reiche, Jens
AU - Danzmann, Karsten
AU - Rasmussen, Torben
AU - Hansen, Torben Vendt
AU - Enggaard, Anders
AU - Pedersen, Søren Møller
AU - Jennrich, Oliver
AU - Suess, Martin
AU - Sodnik, Zoran
AU - Heinzel, Gerhard
PY - 2015
Y1 - 2015
N2 - Precision phase readout of optical beat note signals is one of the core techniques required for inter-satellite laser interferometry. Future space based gravitational wave detectors like eLISA require such a readout over a wide range of MHz frequencies, due to orbit induced Doppler shifts, with a precision in the order of µ rad/root Hz at frequencies between 0.1 mHz and 1 Hz. In this paper, we present phase readout systems, so-called phasemeters, that are able to achieve such precisions and we discuss various means that have been employed to reduce noise in the analogue circuit domain and during digitisation. We also discuss the influence of some non-linear noise sources in the analogue domain of such phasemeters. And finally, we present the performance that was achieved during testing of the elegant breadboard model of the LISA phasemeter, which was developed in the scope of a European Space Agency technology development activity. (C) 2015 AIP Publishing LLC.
AB - Precision phase readout of optical beat note signals is one of the core techniques required for inter-satellite laser interferometry. Future space based gravitational wave detectors like eLISA require such a readout over a wide range of MHz frequencies, due to orbit induced Doppler shifts, with a precision in the order of µ rad/root Hz at frequencies between 0.1 mHz and 1 Hz. In this paper, we present phase readout systems, so-called phasemeters, that are able to achieve such precisions and we discuss various means that have been employed to reduce noise in the analogue circuit domain and during digitisation. We also discuss the influence of some non-linear noise sources in the analogue domain of such phasemeters. And finally, we present the performance that was achieved during testing of the elegant breadboard model of the LISA phasemeter, which was developed in the scope of a European Space Agency technology development activity. (C) 2015 AIP Publishing LLC.
U2 - 10.1063/1.4927071
DO - 10.1063/1.4927071
M3 - Journal article
C2 - 26233398
VL - 86
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
SN - 0034-6748
IS - 7
M1 - 074501
ER -