Demonstration and comparison of tuned and detuned signal recycling in a large-scale gravitational wave detector

被引:25
作者
Hild, S.
Grote, H.
Hewtison, M.
Lueck, H.
Smith, J. R.
Strain, K. A.
Willke, B.
Danzmann, K.
机构
[1] Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany
[2] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
关键词
D O I
10.1088/0264-9381/24/6/009
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The British/German gravitational wave detector GEO 600 located near Hannover in Germany is the first large-scale gravitational-wave detector using the advanced technique of signal recycling. Currently the instrument operates in detuned signal recycling mode. Several problems arise due to the fact that the signal recycling cavity changes amplitude and phase of all light fields (carrier and sidebands) present at the dark-port. In addition, in the case of detuned signal recycling this leads to unbalanced sideband fields at the detector output. The large amplitude modulation caused by this asymmetry does not carry any gravitational wave information, but might be the cause of saturation and nonlinearities on the main photodiode. We developed and demonstrated a new control method to realize tuned signal recycling operation in a large-scale gravitational wave detector. A detailed comparison of tuned and detuned signal recycling operation is given. The response function of the system (optical gain) was measured and compared, as was the size of amplitude modulation on the main photodiode. Some important noise couplings were measured and partly found to be strongly reduced in the case of tuned signal recycling operation.
引用
收藏
页码:1513 / 1523
页数:11
相关论文
共 13 条
[1]   Frequency-domain interferometer simulation with higher-order spatial modes [J].
Freise, A ;
Heinzel, G ;
Lück, H ;
Schilling, R ;
Willke, B ;
Danzmann, K .
CLASSICAL AND QUANTUM GRAVITY, 2004, 21 (05) :S1067-S1074
[2]   The status of GEO 600 [J].
Grote, H ;
Allen, B ;
Aufmuth, P ;
Aulbert, C ;
Babak, S ;
Balasubramanian, R ;
Barr, BW ;
Berukoff, S ;
Bunkowski, A ;
Cagnoli, G ;
Cantley, CA ;
Casey, MM ;
Chelkowski, S ;
Churches, D ;
Cokelaer, T ;
Colacino, CN ;
Crooks, DRM ;
Cutler, C ;
Danzmann, K ;
Davies, R ;
Dupuis, RJ ;
Elliffe, E ;
Fallnich, C ;
Franzen, A ;
Freise, A ;
Gossler, S ;
Grant, A ;
Grunewald, S ;
Harms, J ;
Heinzel, G ;
Heng, IS ;
Hepstonstall, A ;
Heurs, M ;
Hewitson, M ;
Hild, S ;
Hough, J ;
Itoh, Y ;
Jones, R ;
Huttner, SH ;
Kawabe, K ;
Killow, C ;
Kötter, K ;
Krishnan, B ;
Leonhardt, V ;
Lück, H ;
Machenschalk, B ;
Malec, M ;
Mercer, RA ;
Messenger, C ;
Mohanty, S .
CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (10) :S193-S198
[3]  
GROTE H, UNPUB J INSTRUM
[4]  
GROTE H, 2003, THESIS HANNOVER
[5]   Optimal time-domain combination of the two calibrated output quadratures of GEO 600 [J].
Hewitson, M ;
Grote, H ;
Hild, S ;
Lück, H ;
Ajith, P ;
Smith, JR ;
Strain, KA ;
Willke, B ;
Woan, G .
CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (20) :4253-4261
[6]   Principles of calibrating the dual-recycled GEO 600 [J].
Hewitson, M ;
Heinzel, G ;
Smith, JR ;
Strain, KA ;
Ward, H .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2004, 75 (11) :4702-4709
[7]   The status of GEO 600 [J].
Hild, S. .
CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (19) :S643-S651
[8]   The status of LCGT [J].
Kuroda, K .
CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (08) :S215-S221
[9]  
MALEC M, 2006, THESIS HANNOVER
[10]   RECYCLING IN LASER-INTERFEROMETRIC GRAVITATIONAL-WAVE DETECTORS [J].
MEERS, BJ .
PHYSICAL REVIEW D, 1988, 38 (08) :2317-2326