Author/Authors :
Shinji Miyoki، نويسنده , , Takashi Uchiyama، نويسنده , , Takayuki Tomaru، نويسنده , , Daisuke Tatsumi، نويسنده , , Hideki Ishizuka، نويسنده , , Masatake Ohashi، نويسنده , , Kazuaki Kuroda، نويسنده , , Akitoshi Ueda، نويسنده , , Toshikazu Suzuki، نويسنده , , Nobuaki Sato، نويسنده , , Tomiyoshi Haruyama، نويسنده , , Akira Yamamoto، نويسنده , , Takakazu Shintomi، نويسنده ,
Abstract :
The reflectance of ultra-low loss dielectric multilayer coating mirrors cooled at 10 K was monitored as the finesse of a Fabry–Perot cavity consisting of them for one month. Their reflectances remained approximately constant within ±5 ppm. The contaminated reflectance due to the cryogenic molecule absorption was investigated to be recovered without any serious damage on their coating surface. This result suggests utilization of the cryogenic mirror is likely for the interferometric gravitational wave detector.
Keywords :
Interferometric gravitational wave detector , Cryogenic contamination , Finesse , Reflectance , Ultra-low loss dielectric multilayer coating mirror
