Compact Multichannel Optical Test Mass Sensing
(B05)
Subject Area
Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
Term
since 2021
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 434617780
Compact and robust laser interferometers are developed that can read out multiple degrees of freedom of several test masses simultaneously with limited resources and crosstalk. These multi-channel interferometers will form the core of optical gradiometers consisting of six or seven test masses to be used in future gradiometry satellites for geodesy. A dedicated test interferometer for the optical readout via Deep Frequency Modulation and custom phasemeter systems has been built and is optimised before being installed in the torsion balance. Our technology will also be useful in other experiments on ground, e.g. for platform stabilisation.
DFG Programme
Collaborative Research Centres
