GENERATION OF RADIATION ON MULTIPLE FREQUENCIES IN GAZES AT PLASMA EXCITATION BY A STRONG FIELD OF FEW-CYCLE PULSES

Kozlov Sergei A, Alexander Korolev, Svyatoslav Shtumpf

2012 , VOLUME 12, NUMBER 3 ( MAY-JUNE )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Vladimir O.
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GENERATION OF RADIATION ON MULTIPLE FREQUENCIES IN GAZES AT PLASMA EXCITATION BY A STRONG FIELD OF FEW-CYCLE PULSES

S. A. Kozlov, A. Korolev, S. Shtumpf

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Abstract

High-frequency radiation generation at neon optical breakdown by femtosecond few-cycle pulses is considered. It is shown that as the number of oscillations per pulse decreases up to just one, a shift of multiple harmonics to shorter wavelengths grows. The plasma dielectric nonlinearity leads to amplified redistribution of radiation energy to shorter wavelengths.

Keywords: few-cycle pulses, plasma nonlinearity, multiple harmonics generation.

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