Optimization of Third Harmonic Conversion Efficiency in the Presence of a Spatially Localized Plasma

A computational optimization of parameters leading to maximal third harmonic conversion efficiency in the presence of a laser-induced plasma is introduced, building on previous experimental work. The model contains full spatial and temporal dynamics for nonlinear interaction and pulse dispersion. Optimization of a localized plasma for a significant further enhancement of conversion efficiencies is suggested by the modeling.