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arXiv 1002.2070physics.opticsphysics.atom-ph
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用熔融石英反射镜调节光学参考腔的热膨胀特性

Tuning the Thermal Expansion Properties of Optical Reference Cavities with Fused Silica Mirrors

Thomas Legero, Thomas Kessler, Uwe Sterr

摘要:

本文研究了由低热膨胀(LTE)玻璃衬垫和熔融石英(FS)反射镜构成的低热噪声法布里-珀罗腔的热膨胀特性。反射镜和垫片的不同热膨胀使反射镜变形。这种变形对腔体的有效热膨胀系数(CTE)有很大贡献,与全LTE玻璃腔体相比,零交叉温度降低约20 K。有限元模拟和热膨胀系数测量表明,LTE环光学接触的FS镜的后表面允许调谐的过零温度在30 K的范围内。

英文摘要:

We investigate the thermal expansion of low thermal noise Fabry-Perot cavities made of Low Thermal Expansion (LTE) glass spacers and Fused Silica (FS) mirrors. The different thermal expansion of mirror and spacer deforms the mirror. This deformation strongly contributes to the cavity's effective Coefficient of Thermal Expansion (CTE), decreasing the zero crossing temperature by about 20 K compared to an all-LTE glass cavity. Finite element simulations and CTE measurements show that LTE rings optically contacted to the back surface of the FS mirrors allow to tune the zero crossing temperature over a range of 30 K.

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。

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