Fox, R.
, Washburn, B.
, Newbury, N.
and Hollberg, L.
(2005),
Wavelength References for Interferometry in Air, Applied Optics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50116 (Accessed May 1, 2026)
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Wavelength References for Interferometry in Air
Published
Author(s)
, Brian R. Washburn, ,
Abstract
Interferometer sources with multiple known wavelengths can be provided by tunable lasers and calibrated optical reference cavities. The mode wavelengths are known by measuring a laser¿s frequency while 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. The residuals after correction indicate a repeatability of ¿ 2 X 10-8 (3ς), with the wavelength accuracy limited to ¿ 4 X 10-8 by knowledge of the absolute helium gas temperature during the pressure calibration. Mirror cleaning with anhydrous methanol did not perturb the mode frequency more than our measurement resolution of {Δ}υ/υ ~ 3 X 10-9, limited by temperature correction residuals.Citation
Applied Optics
Volume
44
Issue
36
Pub Type
Journals
Download Paper
Keywords
fabry-perot, interferometry, length metrology, optical cavity
Citation
Issues
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Created December 12, 2005, Updated February 17, 2017