http://www.cnr.it/ontology/cnr/individuo/prodotto/ID57881

Optical metrology for massive detectors of gravitational waves (Articolo in rivista)

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Optical metrology for massive detectors of gravitational waves (Articolo in rivista) (literal)

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Alternative label

Marin F., De Rosa M., Conti L., Taffarello L., Cerdonio M. (2007)
Optical metrology for massive detectors of gravitational waves
in Optics and lasers in engineering
(literal)

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Dip. di Fisica and LENS, Universita` di Firenze, Via Sansone 1, 50019 Sesto Fiorentino (FI), Italy; INFN, Sezione di Firenze, Via Sansone 1, 50019 Sesto Fiorentino (FI), Italy; CNR - Istituto Nazionale di Ottica Applicata, Sezione di Napoli, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy; INFN, Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy; Dip. di Fisica, Universita` di Padova, Via Marzolo 8, 35131 Padova, Italy (literal)

Titolo

Abstract

The high level reached in the stability of laser sources and in the quality of optical components makes interferometric metrology appealing to those involved in the search for detection of gravitational waves (GWs). In this paper we present a readout for massive detectors of GWs, based on laser interferometry with high finesse FabryPérot cavities, and describe the frequency stability of the laser source. The achievable sensitivity at the quantum limit level inherent to this technique requires a careful design, in order to reduce other sources of extra noise. In particular, we focus on the local effects of thermal and radiation pressure fluctuations and present an optical configuration that can reduce these effects below the quantum limit level. (literal)

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