arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.3558gr-qcphysics.ins-det
收藏

低温laser干涉引力波探测器中热涨落的减小

Reduction of thermal fluctuations in a cryogenic laser interferometric gravitational wave detector

Takashi Uchiyama, Shinji Miyoki, Souichi Telada, Kazuhiro Yamamoto, Masatake Ohashi, Kazuhiro Agatsuma, Koji Arai, Masa-Katsu Fujimoto, Tomiyoshi Haruyama, Seij… 展开作者

Takashi Uchiyama, Shinji Miyoki, Souichi Telada, Kazuhiro Yamamoto, Masatake Ohashi, Kazuhiro Agatsuma, Koji Arai, Masa-Katsu Fujimoto, Tomiyoshi Haruyama, Seiji Kawamura, Osamu Miyakawa, Naoko Ohishi, Takanori Saito, Takakazu Shintomi, Toshikazu Suzuki, Ryutaro Takahashi, Daisuke Tatsumi

摘要:

镜面的热涨落是干涉型引力波(GW)探测器的基本限制。在这里,我们首次实验证明,在17\,K和18\,K的低温激光干涉仪天文台的蓝宝石反射镜GW检测器中的反射镜的热波动的减少。在90 ~ 240 Hz的频率范围内,由于反射镜的热涨落限制了探测器的灵敏度,通过对反射镜进行冷却,提高了探测器的灵敏度.提高的灵敏度在165 Hz处达到最大值$2.2 \times 10^{-19}\,\textrm{m}/\sqrt{\textrm{Hz}}$。

英文摘要:

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\,K and 18\,K. The detector sensitivity, which was limited by the mirror's thermal fluctuation at room temperature, was improved in the frequency range of 90\,Hz to 240\,Hz by cooling the mirrors. The improved sensitivity reached a maximum of $2.2 \times 10^{-19}\,\textrm{m}/\sqrt{\textrm{Hz}}$ at 165\,Hz.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑