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Proceedings Article

Low-loss coatings for the VIRGO large mirrors

F. Beauville ; D. Buskulic ; R. Flaminio ; F. Marion ; A. Masserot ; L. Massonnet ; B. Mours ; F. Moreau ; J. Ramonet ; E. Tournefier ; D. Verkindt ; O. Veziant ; M. Yvert ; Regis Barille ; Vincenzino Dattilo ; Daniel Enard ; Franco Frasconi ; Alberto Gennai ; Paolo La Penna ; Magali Loupias ; Federico Paoletti ; L. Bracci ; Giovanni Calamai ; E. Campagna ; G. Conforto ; E. Cuoco ; I. Fiori ; G. Guidi ; G. Losurdo ; Fabrizio Martelli ; Massimo Mazzoni ; B. Perniola ; Ruagero N. Stanga ; Flavio Vetrano ; A. Vicere ; D. Babusci ; Gianfranco Giordano ; Jean-Marie Mackowski ; Nazario Morgado ; Laurent Pinard ; Alban Remillieux ; Fausto Acernese ; Fabrizio Barone ; Enrico Calloni ; Rosario De Rosa ; Luciano Di Fiore ; Antonio Eleuteri ; Leopoldo Milano ; Ketevan Qipiani ; Iolanda Ricciardi ; G. Russo ; Salvatore Solimeno ; M. Varvella ; Francois Bondu ; Alain Brillet ; Eric Chassande-Mottin ; Frederic Cleva ; T. Cokelaer ; J.-P. Coulon ; B. Dujardin ; J.-D. Fournier ; H. Heitmann ; Catherine N. Man ; F. Mornet ; J. Pacheco ; A. Pai ; Herve Trinquet ; J.-Y. Vinet ; N. Arnaud ; M. Barsuglia ; M. A. Bizouard ; V. Brisson ; F. Cavalier ; M. Davier ; P. Hello ; P. Heusse ; S. Kreckelberg ; A. Claude Boccara ; Vincent Loriette ; J. Moreau ; V. Reita ; P. Amico ; L. Bosi ; Luca Gammaitoni ; M. Punturo ; F. Travasso ; H. Vocca ; L. Barsotti ; S. Braccini ; C. Bradaschia ; G. Cella ; C. Corda ; A. Di Virgilio ; I. Ferrante ; F. Fidecaro ; Adalberto Giazotto ; E. Majorana ; L. Holloway ; R. Passaquieti ; D. Passuello ; R. Poggiani ; A. Toncelli ; M. Tonelli ; L. Brocco ; S. Frasca ; C. Palomba ; P. Puppo ; P. Rapagnani ; F. Ricci
[+] Author Affiliations
F. Beauville, D. Buskulic, R. Flaminio, F. Marion, A. Masserot, L. Massonnet, B. Mours, F. Moreau, J. Ramonet, E. Tournefier, D. Verkindt, O. Veziant, M. Yvert

Lab. d' Annecy-le-vieux de Physique des Particles (France)

Regis Barille, Vincenzino Dattilo, Daniel Enard, Alberto Gennai, Paolo La Penna, Magali Loupias

European Gravitational Observatory (Italy)

Franco Frasconi, Federico Paoletti

European Gravitational Observatory (Italy) and INFN (Italy)

L. Bracci, Giovanni Calamai, E. Campagna, G. Conforto, E. Cuoco, I. Fiori, G. Guidi, G. Losurdo, Fabrizio Martelli, Massimo Mazzoni, B. Perniola, Ruagero N. Stanga, Flavio Vetrano, A. Vicere, D. Babusci, Gianfranco Giordano, Fausto Acernese, Fabrizio Barone, Enrico Calloni, Rosario De Rosa, Luciano Di Fiore, Antonio Eleuteri, Leopoldo Milano, Ketevan Qipiani, Iolanda Ricciardi, G. Russo, Salvatore Solimeno, M. Varvella, P. Amico, L. Bosi, Luca Gammaitoni, M. Punturo, F. Travasso, H. Vocca, L. Barsotti, S. Braccini, C. Bradaschia, G. Cella, C. Corda, A. Di Virgilio, I. Ferrante, F. Fidecaro, Adalberto Giazotto, E. Majorana, L. Holloway, R. Passaquieti, D. Passuello, R. Poggiani, A. Toncelli, M. Tonelli, L. Brocco, S. Frasca, C. Palomba, P. Puppo, P. Rapagnani, F. Ricci

INFN (Italy)

Jean-Marie Mackowski, Nazario Morgado, Laurent Pinard, Alban Remillieux

SMA/INP4-Univ. Claude Bernard Lyon 1 (France)

Francois Bondu, Alain Brillet, Eric Chassande-Mottin, Frederic Cleva, T. Cokelaer, J.-P. Coulon, B. Dujardin, J.-D. Fournier, H. Heitmann, Catherine N. Man, F. Mornet, J. Pacheco, A. Pai, Herve Trinquet, J.-Y. Vinet

Observatoire de la Cote d'Azur (France)

N. Arnaud, M. Barsuglia, M. A. Bizouard, V. Brisson, F. Cavalier, M. Davier, P. Hello, P. Heusse, S. Kreckelberg

LAL/IN2P3-Univ. de Paris-Sud (France)

A. Claude Boccara, Vincent Loriette, J. Moreau, V. Reita

Ecole Superieure de Physique et de Chimie Industrielles (France)

Proc. SPIE 5250, Advances in Optical Thin Films, 483 (February 25, 2004); doi:10.1117/12.516431
Text Size: A A A
From Conference Volume 5250

  • Advances in Optical Thin Films
  • Claude Amra; Norbert Kaiser; H. Angus Macleod
  • St. Etienne, France | September 30, 2003

abstract

The goal of the VIRGO program is to build a giant Michelson type interferometer (3 kilometer long arms) to detect gravitational waves. Large optical components (350 mm in diameter), having extremely low loss at 1064 nm, are needed. Today, the Ion beam Sputtering is the only deposition technique able to produce optical components with such performances. Consequently, a large ion beam sputtering deposition system was built to coat large optics up to 700 mm in diameter. The performances of this coater are described in term of layer uniformity on large scale and optical losses (absorption and scattering characterization). The VIRGO interferometer needs six main mirrors. The first set was ready in June 2002 and its installation is in progress on the VIRGO site (Italy). The optical performances of this first set are discussed. The requirements at 1064 nm are all satisfied. Indeed, the absorption level is close to 1 ppm (part per million), the scattering is lower than 5 ppm and the R.M.S. wavefront of these optics is lower than 8 nm on 150 mm in diameter. Finally, some solutions are proposed to further improve these performance, especially the absorption level (lower than 0.1 ppm) and the mechanical quality factor Q of the mirrors (thermal noise reduction).

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

F. Beauville ; D. Buskulic ; R. Flaminio ; F. Marion ; A. Masserot, et al.
"Low-loss coatings for the VIRGO large mirrors", Proc. SPIE 5250, Advances in Optical Thin Films, 483 (February 25, 2004); doi:10.1117/12.516431; http://dx.doi.org/10.1117/12.516431


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