Title :
Heterodyne interferometer with sub-nm sensitivity in translation measurement and sub-μrad sensitivity in tilt measurement for the LISA inertial sensor
Author :
Schuldt, T. ; Gohlke, M. ; Weise, Dennis ; Johann, U. ; Peters, A. ; Braxmaier, C.
Author_Institution :
EADS-Astrium GmbH, Friedrichshafen
Abstract :
This study develops a heterodyne interferometer utilizing differential wavefront sensing for tilt measurement. The interferometer has sub-nm sensitivity in translation measurement and sub-μrad sensitivity in tilt measurement for the LISA (laser interferometer space antenna) inertial sensor. The interferometer design is based on maximum symmetry where reference and measurement arm have the same optical pathlength, frequency and polarization.
Keywords :
astronomical techniques; gravitational wave detectors; heterodyne detection; light interferometers; remote sensing by laser beam; wavefront sensors; LISA inertial sensor; differential wavefront sensing; gravitational wave detection; heterodyne interferometer; interferometer design; laser interferometer space antenna; optical pathlength; optical polarization; sub-μrad sensitivity; subnanometer sensitivity; tilt measurement; translation measurement; Current measurement; Extraterrestrial measurements; Frequency measurement; Mirrors; Optical feedback; Optical fiber polarization; Optical interferometry; Position measurement; Satellites; Space missions;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0930-3
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386391
