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Enhancement of third-harmonic generation in nonlocal spatial solitons

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Abstract

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.

© 2010 Optical Society of America

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