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Third harmonic generation by a low intensity laser pulse in a corrugated discharge capillary

Quasi phase matching and increase of laser interaction length were promoted by periodically modulated plasma guide formed by a discharge current ablating the inner capillary walls. The phenomenon was demonstrated through the use of third harmonics. For Ti:Sapphire laser pulses propagating through 1c...

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Bibliographic Details
Published in:Applied physics letters 2011-11, Vol.99 (21), p.211501-211501-3
Main Authors: Katzir, Y., Ferber, Y., Megidish, E., Zigler, A., Milchberg, H. M.
Format: Article
Language:English
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Summary:Quasi phase matching and increase of laser interaction length were promoted by periodically modulated plasma guide formed by a discharge current ablating the inner capillary walls. The phenomenon was demonstrated through the use of third harmonics. For Ti:Sapphire laser pulses propagating through 1cm long corrugated discharge capillaries, with an axial corrugation period of 200 μ m, the third harmonic was generated at intensities as low as ∼10 9 W/cm 2 .
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3664221