UV filamentation in gases is limited by transient molecular photoexcitation saturating the Kerr nonlinearity, not by photoionization plasma defocusing.
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Ionization-free femtosecond UV pulse filamentation resulting from non-perturbative Kerr effect saturation due to transient photoexcitation of molecules
UV filamentation in gases is limited by transient molecular photoexcitation saturating the Kerr nonlinearity, not by photoionization plasma defocusing.