Laser interferometric adaptive optics system for a three-meter suspended Michelson interferometer for low-frequency seismic noise measurement

Fausto Acernese; Saverio Avino; Enrico Calloni; Fabrizio Barone; Rosario De Rosa; Antonio Eleuteri; Leopoldo Milano; Ketevan Qipiani; Silvio Pardi; Iolanda Ricciardi

doi:10.1117/12.565369

11 November 2004 Laser interferometric adaptive optics system for a three-meter suspended Michelson interferometer for low-frequency seismic noise measurement

Fausto Acernese, Saverio Avino, Enrico Calloni, Fabrizio Barone, Rosario De Rosa, Antonio Eleuteri, Leopoldo Milano, Ketevan Qipiani, Silvio Pardi, Iolanda Ricciardi

Author Affiliations +

Proceedings Volume 5572, Optics in Atmospheric Propagation and Adaptive Systems VII; (2004) https://doi.org/10.1117/12.565369
Event: Remote Sensing, 2004, Maspalomas, Canary Islands, Spain

Abstract

We present a study and preliminary experimental results on the possibility of using an adaptive optics system for reduction of geometrical fluctuations of input laser beam in long baseline interferometric detectors of gravitational waves. Presently used completely passive systems are expected to reduce fluctuations only at a level that, due to coupling of geometrical fluctuations with interferometer asymmetries, impose requirements on interferometer operation which are at the limit of present technology. Active pre-stabilization could reduce fluctuations and relax these requirements, allowing a safer and more robust interferometer operation on the planned time-scale of years of continuous data acquisition. The system and the methodologies we have developed are going to be adapted to the Mode Cleaner of the IDGW-3P, a prototype of three-meter suspended Michelson Interferometer expressely developed for Seismic Noise measurement, now becoming operational in Napoli.

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Fausto Acernese, Saverio Avino, Enrico Calloni, Fabrizio Barone, Rosario De Rosa, Antonio Eleuteri, Leopoldo Milano, Ketevan Qipiani, Silvio Pardi, and Iolanda Ricciardi "Laser interferometric adaptive optics system for a three-meter suspended Michelson interferometer for low-frequency seismic noise measurement", Proc. SPIE 5572, Optics in Atmospheric Propagation and Adaptive Systems VII, (11 November 2004); https://doi.org/10.1117/12.565369

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