Ultrahigh long-term dimensional stability of a sapphire cryogenic optical resonator
Optics Letters, Vol. 23, Issue 13, pp. 1031-1033 (1998)
http://dx.doi.org/10.1364/OL.23.001031
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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.
© 1998 Optical Society of America
OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.4780) Lasers and laser optics : Optical resonators
(300.0300) Spectroscopy : Spectroscopy
Citation
R. Storz, C. Braxmaier, K. Jäck, O. Pradl, and S. Schiller, "Ultrahigh long-term dimensional stability of a sapphire cryogenic optical resonator," Opt. Lett. 23, 1031-1033 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-13-1031
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