Abstract
The first experimental measurement of nonlinear optical susceptibilities at a laser-induced resonance in the atomic continuum is reported. Raman amplification efficiency as well as polarization anisotropy are investigated by scanning the probe frequency near the autoionizing-like resonance. Tunable ultraviolet radiations by four-photon processes in sodium vapour near the induced resonances are obtained. Estimations of the real and imaginary parts of the nonlinearities and also of their moduli are presented.
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Dimov, S.S., Pavlov, L.I., Stamenov, K.V. et al. Nonlinear optical susceptibility measurement at an autoionizing-like resonance in atoms. Opt Quant Electron 15, 305–312 (1983). https://doi.org/10.1007/BF00619900
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DOI: https://doi.org/10.1007/BF00619900