Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9589482 | Journal of Molecular Spectroscopy | 2005 | 6 Pages |
Abstract
A pair of 1.5 μm semiconductor laser frequency standards have been developed for optical telecommunications use, stabilised to transitions of 12C2H2 and 13C2H2, using cavity-enhanced Doppler-free saturation absorption spectroscopy. The absolute frequencies of 41 lines of the ν1 + ν3 band of 12C2H2, covering the spectral region 1520-1545 nm, have been measured by use of a passive optical frequency comb generator, referenced to 13C2H2 transitions of known frequency. The mean experimental uncertainties (coverage factor k = 1) of the frequency values are 3.0 kHz (type A) and 10 kHz (type B). Improved values of the band origin ν0, rotational constants Bâ² and Bâ³, and centrifugal distortion coefficients Dâ², Dâ³, Hâ², and Hâ³ are presented.
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Authors
C.S. Edwards, G.P. Barwood, H.S. Margolis, P. Gill, W.R.C. Rowley,