Abstract
A two laser excitation scheme has been applied to Ca atoms in an atomic beam. It permits to transfer narrow Doppler-free signals from a weak transition into a strong resonance line. This leads to a large increase of the signal-to-noise ratio and is of relevance for the application of the Ca intercombination transition as a possible new standard in the optical range.
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This work was supported by the Deutsche Forschungsgemeinschaft.
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Kowalski, J., Träger, F., Vollmer, M. et al. Signal enhancement in laser spectroscopy of metastable states. Z Physik A 320, 353–354 (1985). https://doi.org/10.1007/BF01881289
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DOI: https://doi.org/10.1007/BF01881289