Third and fifth harmonic generation by tightly focused femtosecond pulses at 2.2μm wavelength in air

Gombojav O. Ariunbold; Pavel Polynkin; Jerome V. Moloney

doi:10.1364/OE.20.001662

Third and fifth harmonic generation by tightly focused femtosecond pulses at 2.2μm wavelength in air

Gombojav O. Ariunbold, Pavel Polynkin, Jerome V. Moloney

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37 Scopus citations

Abstract

We report experiments on the generation of third and fifth harmonics of millijoule-level, tightly focused, femtosecond laser pulses at 2.2μm wavelength in air. The measured ratio of yields of the third and fifth harmonics in our setup is found equal to 2 7middot; 10^-4. This result contradicts the recent suggestion that the Kerr effect in air saturates and changes sign in ultra-intense optical fields.

Original language	English (US)
Pages (from-to)	1662-1667
Number of pages	6
Journal	Optics Express
Volume	20
Issue number	2
DOIs	https://doi.org/10.1364/OE.20.001662
State	Published - Jan 16 2012

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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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 2.2μm wavelength in air. The measured ratio of yields of the third and fifth harmonics in our setup is found equal to 2 7middot; 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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AU - Polynkin, Pavel

AU - Moloney, Jerome V.

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AB - We report experiments on the generation of third and fifth harmonics of millijoule-level, tightly focused, femtosecond laser pulses at 2.2μm wavelength in air. The measured ratio of yields of the third and fifth harmonics in our setup is found equal to 2 7middot; 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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Third and fifth harmonic generation by tightly focused femtosecond pulses at 2.2μm wavelength in air

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