Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta2O5 doped with TiO2

Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta2O5 doped with TiO2
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TiO2 掺杂单层 Ta2O5 低温机械耗散峰的测量

DOI:
10.1088/0264-9381/25/5/055005
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发表时间:
2008
影响因子:
3.5
通讯作者:
W. Vodel
W. Vodel
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
I. Martin;H. Armandula;C. Comtet;M. M. Fejer;A. Gretarsson;G. Harry;J. Hough;J. M. M. Mackowski;I. MacLaren;C. Michel;J. L. Montorio;N. Morgado;R. Nawrodt;S. Penn;S. Reid;A. Remillieux;R. Route;S. Rowan;C. Schwarz;P. Seidel;W. Vodel

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氧化物涂层中机械耗散引起的热噪声是许多精密测量系统的主要限制,包括光学频率标准,高分辨率光谱学和干涉重力波探测器。本文给出了掺杂tio2的离子束溅射ta2o5的耗散随温度在7 K到290 K之间的函数的测量结果,显示了在20 K时的损耗峰。对峰值的分析提供了掺杂ta2o5涂层耗散源的第一个证据,导致减少热噪声效应的可能性。
Thermal noise arising from mechanical dissipation in oxide coatings is a major limitation to many precision measurement systems, including optical frequency standards, high-resolution optical spectroscopy and interferometric gravity wave detectors. Presented here are measurements of dissipation as a function of temperature between 7 K and 290 K in ion-beam-sputtered Ta 2 O 5 doped with TiO 2, showing a loss peak at 20 K. Analysis of the peak provides the first evidence of the source of dissipation in doped Ta 2 O 5 coatings, leading to possibilities for the reduction of thermal noise effects.
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