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Wavelength references for interferometry in air



R W. Fox, Brian R. Washburn, Nathan R. Newbury, Leo W. Hollberg


Cavity-mode wavelengths in air are determined by measuring a laser's fequency while it is locked to the mode in vacuum during a caibration 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 plus or minus}2 X 10-8(3ς), with the wavelength accuracy limited to plus or minus}4 X 10-8 by knowledge of the absolute helium gas temperature during the pressure calibration. Mirror cleaning perturbed the mode frequncy by less than Δ}Ņ/Ņ 3 X 1010-9, limited by temperature correction residuals.
Applied Optics


Fox, R. , Washburn, B. , Newbury, N. and Hollberg, L. (2005), Wavelength references for interferometry in air, Applied Optics, [online], (Accessed May 18, 2024)


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Created November 30, 2005, Updated October 12, 2021