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Doppler-Free Laser Polarization Spectroscopy

    Work supported by the National Science Foundation under Grant No. NSF 14786, and by the U. S. Office of Naval Research under Contract No. N00014-75-C-0841.

    https://doi.org/10.1142/9789812813787_0003Cited by:0 (Source: Crossref)
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    Abstract:

    We have demonstrated a sensitive new method of Doppler-free spectroscopy, monitoring the nonlinear interaction of two monochromatic laser beams in an absorbing gas via changes in light polarization. The signal-to-background ratio can greatly surpass that of saturated absorption. Polarization spectra of the hydrogen Balmer-β line, recorded with a cw dye laser, reveal the Stark splitting of single fine-structure components in a Wood discharge.