Laser interferometric adaptive optics system for a three-meter suspended Michelson interferometer for low-frequency seismic noise measurement
Year: 2004
Authors: Acernese F., Avino S., Calloni E., Barone F., De Rosa R., Eleuteri A., Milano L., Qipiani K., Pardi S., Ricciardi I.
Autors Affiliation: Dipartimento di Scienze Fisiche, Università Federico II di Napoli, Complesso Universitario Monte Sant’Angelo, via Cinthia, Naples, Italy; INFN, sez. di Napoli, Complesso Universitario Monte Sant’Angelo, via Cinthia, Naples, Italy;
Dipartimento di Scienze Farmaceutiche, Università di Salerno, Via Ponte Don Melillo, Fisciano (Salerno) Italy;
Dipartimento di Matematica ed Applicazioni, Università di Napoli Federico II, Complesso Universitario Monte Sant’Angelo, via Cinthia, Naples, Italy
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 continue 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.
Journal/Review: PROCEEDINGS OF SPIE
Volume: 5572 Pages from: 366 to: 371
KeyWords: Seismic monitoringDOI: 10.1117/12.565369Connecting to view paper tab on IsiWeb: Click here