TY - JOUR
T1 - Reduction of thermal fluctuations in a cryogenic laser interferometric gravitational wave detector
AU - Uchiyama, Takashi
AU - Miyoki, Shinji
AU - Telada, Souichi
AU - Yamamoto, Kazuhiro
AU - Ohashi, Masatake
AU - Agatsuma, Kazuhiro
AU - Arai, Koji
AU - Fujimoto, Masa Katsu
AU - Haruyama, Tomiyoshi
AU - Kawamura, Seiji
AU - Miyakawa, Osamu
AU - Ohishi, Naoko
AU - Saito, Takanori
AU - Shintomi, Takakazu
AU - Suzuki, Toshikazu
AU - Takahashi, Ryutaro
AU - Tatsumi, Daisuke
PY - 2012/4/3
Y1 - 2012/4/3
N2 - The thermal fluctuation of mirror surfaces is the fundamental limitation for interferometric gravitational wave (GW) detectors. Here, we experimentally demonstrate for the first time a reduction in a mirror's thermal fluctuation in a GW detector with sapphire mirrors from the Cryogenic Laser Interferometer Observatory at 17 and 18K. The detector sensitivity, which was limited by the mirror's thermal fluctuation at room temperature, was improved in the frequency range of 90 to 240Hz by cooling the mirrors. The improved sensitivity reached a maximum of 2.2×10 -19m/√Hz at 165Hz.
AB - The thermal fluctuation of mirror surfaces is the fundamental limitation for interferometric gravitational wave (GW) detectors. Here, we experimentally demonstrate for the first time a reduction in a mirror's thermal fluctuation in a GW detector with sapphire mirrors from the Cryogenic Laser Interferometer Observatory at 17 and 18K. The detector sensitivity, which was limited by the mirror's thermal fluctuation at room temperature, was improved in the frequency range of 90 to 240Hz by cooling the mirrors. The improved sensitivity reached a maximum of 2.2×10 -19m/√Hz at 165Hz.
UR - http://www.scopus.com/inward/record.url?scp=84859601927&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.108.141101
DO - 10.1103/PhysRevLett.108.141101
M3 - 学術論文
AN - SCOPUS:84859601927
SN - 0031-9007
VL - 108
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
M1 - 141101
ER -