PPPL-3474 is available in <a href="PPPL-3474.pdf">pdf</a> or 
<a href="PPPL-3474.ps">postscript</a> formats.

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<b>Pulse Compression in Plasma: Generation of Femtosecond Pulses without CPA</b>
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Authors: G. Shvets, N.J. Fisch, A. Pukhov, and J. Meyer-ter-Vehn
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<b>Date of PPPL Report:</b> July 2000
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<p><b>Presented at:</b> the 12th International Conference on Ultra-fast Phenomena, held at Charlston, SC, 9-13 July 2000. To be published in the conference proceedings.</p>

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Laser pulses can be effciently compressed to femtosecond duration when a smaller-
frequency short pulse collides with high frequency long pulse in rare plasma, absorbing most of its energy. The mechanism of short pulse amplification is nonlinear superradiance.
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