Real-time phasefront detector for heterodyne interferometers

We present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne interferometer, with heterodyne frequencies up to approximately 10...

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Bibliographic Details
Published in:arXiv.org 2012-03
Main Authors: Felipe Guzmán Cervantes, Heinzel, Gerhard, García Marín, Antonio F, Wand, Vinzenz, Steier, Frank, Jennrich, Oliver, Danzmann, Karsten
Format: Article
Language:English
Subjects:
Interferometers
Real time
Sensors
Online Access:Get full text
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Summary:We present a real-time differential phasefront detector sensitive to better than 3 mrad rms, which corresponds to a precision of about 500 pm. This detector performs a spatially resolving measurement of the phasefront of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the LISA Technology Package (LTP) interferometer, and will assist in the manufacture of its flight model. Due to the advantages this instrument offers, it also has general applications in optical metrology.
ISSN:2331-8422
DOI:10.48550/arxiv.1203.4478