Enhancement of third harmonic generation in nonlocal spatial solitons

M. Peccianti, A. Pasquazi, G. Assanto and R. Morandotti

Opt. Lett. 35 (20), 3342 (2010)


We report on the observation of Type I third-harmonic generation induced by a train of femtosecond laser pulses in nematic liquid crystals. We find that as the average power of the train is increased, the frequency conversion process is enhanced as a consequence of the tight confinement of the pulses into a nonlocal spatial soliton.