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First Demonstration of Electrostatic Damping of Parametric Instability at Advanced LIGO.
Blair, Carl; Gras, Slawek; Abbott, Richard; Aston, Stuart; Betzwieser, Joseph; Blair, David; DeRosa, Ryan; Evans, Matthew; Frolov, Valera; Fritschel, Peter; Grote, Hartmut; Hardwick, Terra; Liu, Jian; Lormand, Marc; Miller, John; Mullavey, Adam; O'Reilly, Brian; Zhao, Chunnong; Abbott, B P; Abbott, T D; Adams, C; Adhikari, R X; Anderson, S B; Ananyeva, A; Appert, S; Arai, K; Ballmer, S W; Barker, D; Barr, B; Barsotti, L; Bartlett, J; Bartos, I; Batch, J C; Bell, A S; Billingsley, G; Birch, J; Biscans, S; Biwer, C; Bork, R; Brooks, A F; Ciani, G; Clara, F; Countryman, S T; Cowart, M J; Coyne, D C; Cumming, A; Cunningham, L; Danzmann, K; Da Silva Costa, C F; Daw, E J.
Afiliación
  • Blair C; University of Western Australia, Crawley, Western Australia 6009, Australia.
  • Gras S; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Abbott R; California Institute of Technology, Pasadena 91125, USA.
  • Aston S; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Betzwieser J; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Blair D; University of Western Australia, Crawley, Western Australia 6009, Australia.
  • DeRosa R; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Evans M; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Frolov V; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Fritschel P; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Grote H; Max Planck Institute for Gravitational Physics, 30167 Hannover, Germany.
  • Hardwick T; Louisiana State University, Baton Rouge, Louisiana 70803, USA.
  • Liu J; University of Western Australia, Crawley, Western Australia 6009, Australia.
  • Lormand M; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Miller J; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Mullavey A; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • O'Reilly B; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Zhao C; University of Western Australia, Crawley, Western Australia 6009, Australia.
  • Abbott BP; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Abbott TD; Louisiana State University, Baton Rouge, Louisiana 70803, USA.
  • Adams C; American University, Washington, D.C. 20016, USA.
  • Adhikari RX; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Anderson SB; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Ananyeva A; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Appert S; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Arai K; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Ballmer SW; University of Florida, Gainesville, Florida 32611, USA.
  • Barker D; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Barr B; University of Sannio at Benevento, I-82100 Benevento, Italy and INFN, Sezione di Napoli, I-80100 Napoli, Italy.
  • Barsotti L; Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-30167 Hannover, Germany.
  • Bartlett J; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Bartos I; LIGO, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Batch JC; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Bell AS; University of Sannio at Benevento, I-82100 Benevento, Italy and INFN, Sezione di Napoli, I-80100 Napoli, Italy.
  • Billingsley G; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Birch J; American University, Washington, D.C. 20016, USA.
  • Biscans S; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Biwer C; Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik, D-30167 Hannover, Germany.
  • Bork R; University of Florida, Gainesville, Florida 32611, USA.
  • Brooks AF; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Ciani G; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Clara F; Inter-University Centre for Astronomy and Astrophysics, Pune 411007, India.
  • Countryman ST; LIGO Livingston Observatory, Livingston, Louisiana 70754, USA.
  • Cowart MJ; LIGO, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Coyne DC; American University, Washington, D.C. 20016, USA.
  • Cumming A; LIGO, California Institute of Technology, Pasadena, California 91125, USA.
  • Cunningham L; University of Sannio at Benevento, I-82100 Benevento, Italy and INFN, Sezione di Napoli, I-80100 Napoli, Italy.
  • Danzmann K; University of Sannio at Benevento, I-82100 Benevento, Italy and INFN, Sezione di Napoli, I-80100 Napoli, Italy.
  • Da Silva Costa CF; International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bangalore 560012, India.
  • Daw EJ; University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA.
Phys Rev Lett ; 118(15): 151102, 2017 Apr 14.
Article en En | MEDLINE | ID: mdl-28452534
ABSTRACT
Interferometric gravitational wave detectors operate with high optical power in their arms in order to achieve high shot-noise limited strain sensitivity. A significant limitation to increasing the optical power is the phenomenon of three-mode parametric instabilities, in which the laser field in the arm cavities is scattered into higher-order optical modes by acoustic modes of the cavity mirrors. The optical modes can further drive the acoustic modes via radiation pressure, potentially producing an exponential buildup. One proposed technique to stabilize parametric instability is active damping of acoustic modes. We report here the first demonstration of damping a parametrically unstable mode using active feedback forces on the cavity mirror. A 15 538 Hz mode that grew exponentially with a time constant of 182 sec was damped using electrostatic actuation, with a resulting decay time constant of 23 sec. An average control force of 0.03 nN was required to maintain the acoustic mode at its minimum amplitude.
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Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2017 Tipo del documento: Article
Texto completo
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Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2017 Tipo del documento: Article