Third optical harmonic generation in media with positive dispersion near three photon resonance

摘要

It is shown, that influence of self-action effects is capable to expand a spectral range of resonant optical harmonic generation and in three-photon resonant medium with positive dispersion under tight focusing the influence of ac Shtark shift results in fourth-order power dependence of third harmonic efficiency on fundamental intensity and medium density. The comparison with known experimental data is carried out.