Wavelength references for interferometry in air
Applied Optics, Vol. 44, Issue 36, pp. 7793-7801 (2005)
http://dx.doi.org/10.1364/AO.44.007793
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Abstract
Cavity-mode wavelengths in air are determined by measuring a laser's frequency while it is locked to the mode in vacuum during a calibration step and subsequently correcting the mode wavelength for atmospheric pressure compression, temperature difference, and material aging. Using a Zerodur ring cavity, we demonstrate a repeatability of ±2×10−8 (3σ), with the wavelength accuracy limited to ±4×10−8 by knowledge of the absolute helium gas temperature during the pressure calibration. Mirror cleaning perturbed the mode frequency by less than Δ ν/ν∼3×10−9, limited by temperature correction residuals.
© 2005 Optical Society of America
OCIS Codes
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3940) Instrumentation, measurement, and metrology : Metrology
ToC Category:
Interferometry
Citation
Richard W. Fox, Brian R. Washburn, Nathan R. Newbury, and Leo Hollberg, "Wavelength references for interferometry in air," Appl. Opt. 44, 7793-7801 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-36-7793
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