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arXiv · 1106.5511

Third and fifth harmonics generation by tightly focused femtosecond pulses at 2.2 {\mu}m wavelength in air

Gombojav O. Ariunbold·Pavel Polynkin·Jerome V. Moloney
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Abstract

We report experiments on the generation of third and fifth harmonics of millijoule-level, tightly focused, femtosecond laser pulses at 2.2 {\mu}m wavelength in air. The measured ratio of yields of the third and fifth harmonics in our setup is about 2 \cdot 10-4. This result contradicts the recent suggestion that the Kerr effect in air saturates and changes sign in ultra-intense optical fields.

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Gombojav O. Ariunbold, Pavel Polynkin, Jerome V. Moloney. 2011-06-27. Third and fifth harmonics generation by tightly focused femtosecond pulses at 2.2 {\mu}m wavelength in air. https://doi.org/10.1364/oe.20.001662

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