Mechanical quality factor of a sapphire fiber at cryogenic temperatures

被引：33

作者：

Uchiyama, T

Tomaru, T

Tatsumi, D

Miyoki, S

Ohashi, M

Kuroda, K

Suzuki, T

Yamamoto, A

Shintomi, T

机构：

[1] KEK, Cryogen Sci Ctr, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[2] Univ Tokyo, ICRR, Kashiwa, Chiba 2778582, Japan

来源：

PHYSICS LETTERS A | 2000年 / 273卷 / 5-6期

关键词：

cryogenies; gravitational wave detector; laser interferometer; thermal noise; sapphire; mechanical quality factor;

D O I：

10.1016/S0375-9601(00)00514-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A mechanical quality factor of 1.1 x 10(7) was obtained for the 199 Hz bending vibrational mode in a monocrystalline sapphire fiber at 6 K. Consequently. we confirm that pendulum thermal noise of cryogenic mirrors used for gravitational wave detectors can be reduced by the sapphire fiber suspension. (C) 2000 Published by Elsevier Science B.V.

引用

页码：310 / 315

页数：6

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