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Ultrahigh long-term dimensional stability of a sapphire cryogenic optical resonator.

作者信息

Storz R, Braxmaier C, Jäck K, Pradl O, Schiller S

机构信息

Fakultät für Physik, Universität Konstanz, D-78457 Konstanz, Germany.

出版信息

Opt Lett. 1998 Jul 1;23(13):1031-3. doi: 10.1364/ol.23.001031.

DOI:10.1364/ol.23.001031
PMID:18087419
Abstract

We report on the ultrahigh long-term dimensional stability of a crystalline cryogenic optical resonator (CORE) cooled to liquid-helium temperature. The frequency of a Nd:YAG laser stabilized to a CORE was compared over long times with an independent laser system, a frequency-doubled Nd:YAG laser stabilized to a hyperfine line of molecular iodine at 532 nm. Over a 6-month period the drift was less than 3 kHz. The dimensional stability of the CORE is thus more than 2 orders of magnitude higher than that of the best ultralow-expansion glass ceramic cavities at room temperature.

摘要

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