3/2 harmonic generation by femtosecond laser pulses in steep-gradient plasmas

The onset of an electron parametric instability and 3/2 harmonic generation in variable-scale-length plasmas on solid surfaces using femtosecond pulses is observed. With the intensity approaching 10(18) W/cm(2), the instability threshold is already reached at plasma scale lengths of the order of the...

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Bibliographic Details
Published in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2003-08, Vol.68 (2 Pt 2), p.026410-026410
Main Authors: Tarasevitch, A, Dietrich, C, Blome, C, Sokolowski-Tinten, K, von der Linde, D
Format: Article
Language:English
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Summary:The onset of an electron parametric instability and 3/2 harmonic generation in variable-scale-length plasmas on solid surfaces using femtosecond pulses is observed. With the intensity approaching 10(18) W/cm(2), the instability threshold is already reached at plasma scale lengths of the order of the laser wavelength. A well-collimated harmonic emission with unusually broad spectrum is obtained.
ISSN:1539-3755
DOI:10.1103/PhysRevE.68.026410