DC readout experiment in Enhanced LIGO

作者: Tobin T Fricke , Nicolás D Smith-Lefebvre , Richard Abbott , Rana Adhikari , Katherine L Dooley

DOI: 10.1088/0264-9381/29/6/065005

关键词: OpticsDetectorLIGONoise (electronics)PhysicsGravitational waveOptical filterInterferometryHomodyne detectionHeterodyne

摘要: The two 4 km long gravitational wave detectors operated by the Laser Interferometer Gravitational-wave Observatory (LIGO) were modified in 2008 to read out channel using DC readout form of homodyne detection and include an optical filter cavity at output detector. As part upgrade Enhanced LIGO, these modifications replaced radio-frequency (RF) heterodyne system used previously. We describe motivations for implementation mode cleaner LIGO. present characterizations system, including measurements models couplings noises from laser source channel. show that noise are improved over those RF readout, we find achieved shot-noise-limited sensitivity is consistent with modeled results.

参考文章(32)
L. d'Arcio, A. Shoda, E. Granova, M. Perreur-Lloyd, J. Bogenstahl, G. Heinzel, C. Diekmann, J. Pijnenburg, A. Sohmer, H. Ward, A. Taylor, G. Wanner, E. D. Fitzsimons, C. J. Killow, R. Fleddermann, H. Hogenhuis, M. Dehne, D. I. Robertson, D. Weise, M. Tröbs, Optical bench development for LISA ICSO 2010 - International Conference on Space Optics#N#. ,(2010)
Simon Chelkowski, Henning Vahlbruch, Karsten Danzmann, Roman Schnabel, Coherent control of broadband vacuum squeezing Physical Review A. ,vol. 75, pp. 043814- ,(2007) , 10.1103/PHYSREVA.75.043814
K. Somiya, Y. Chen, S. Kawamura, N. Mio, Frequency noise and intensity noise of next-generation gravitational-wave detectors with RF/DC readout schemes Physical Review D. ,vol. 73, pp. 122005- ,(2006) , 10.1103/PHYSREVD.73.122005
Bram J. J. Slagmolen, Adam J. Mullavey, John Miller, David E. McClelland, Peter Fritschel, Tip-tilt mirror suspension: beam steering for advanced laser interferometer gravitational wave observatory sensing and control signals. Review of Scientific Instruments. ,vol. 82, pp. 125108- ,(2011) , 10.1063/1.3669532
J Degallaix, H Grote, M Prijatelj, M Hewitson, S Hild, C Affeldt, A Freise, J Leong, H Lück, K A Strain, H Wittel, B Willke, K Danzmann, Commissioning of the tuned DC readout at GEO 600 Journal of Physics: Conference Series. ,vol. 228, pp. 012013- ,(2010) , 10.1088/1742-6596/228/1/012013
J. B. Camp, H. Yamamoto, S. E. Whitcomb, D. E. McClelland, Analysis of light noise sources in a recycled Michelson interferometer with Fabry–Perot arms Journal of the Optical Society of America A. ,vol. 17, pp. 120- 128 ,(2000) , 10.1364/JOSAA.17.000120
Kirk McKenzie, Malcolm B. Gray, Ping Koy Lam, David E. McClelland, Technical limitations to homodyne detection at audio frequencies. Applied Optics. ,vol. 46, pp. 3389- 3395 ,(2007) , 10.1364/AO.46.003389
T. M. Niebauer, R. Schilling, K. Danzmann, A. Rüdiger, W. Winkler, Nonstationary shot noise and its effect on the sensitivity of interferometers. Physical Review A. ,vol. 43, pp. 5022- 5029 ,(1991) , 10.1103/PHYSREVA.43.5022