Carbon dioxide laser saturation spectroscopy at kHz linewidths

Butcher, R.J., Padgett, M.J. , Arnone, D.D. and Gray, A.J. (1988) Carbon dioxide laser saturation spectroscopy at kHz linewidths. Journal of Modern Optics, 35(3), pp. 315-318. (doi: 10.1080/09500348814550351)

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Consideration is given to factors limiting the resolution in laser saturation experiments. At linewidths in the range 100 kHz to 1 MHz the most important factors arise from the residence time of the absorbing molecule within the radiation field and from saturation broadening. These problems are circumvented by using beams of large diameters and low powers. Two experiments yielding spectra at linewidths around 20 kHz (full-width half-maximum) are described in outline, each employing a CO<sub>2</sub> laser beam of diameter several centimetres. In one experiment 10 µm saturation spectra are obtained directly using an etalon technique; in the other radio-frequency transitions are obtained in a double-resonance experiment.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles
Authors: Butcher, R.J., Padgett, M.J., Arnone, D.D., and Gray, A.J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Modern Optics
Journal Abbr.:J. Mod. Opt.
ISSN (Online):1362-3044
Published Online:01 March 2007

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