Ellipticity dependence of atomic and molecular high harmonic generation |
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| Authors: | A Flettner J König MB Mason T Pfeifer U Weichmann R Düren G Gerber |
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| Institution: | Physikalisches Institut, Universit?t Würzburg, Am Hubland, 97074 Würzburg, Germany, DE
Max-Planck Institut für Str?mungsforschung, Bunsenstr. 10, 37073 G?ttingen, Germany, DE
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| Abstract: | High harmonic generation is compared in the dependence on the ellipticity of the fundamental laser radiation for an atomic
and a molecular system. In particular argon and nitrogen are compared employing molecular beams and intense ( 3×1014 W/cm2) and ultrashort (80 fs) 800 nm laser pulses. It turns out that for all the harmonics under investigation (H5, H13 and H21)
the harmonic yield decreases slower with the ellipticity for the molecule than for the atom. This indicates differences in
atomic and molecular high harmonic generation.
Received 24 April 2002 Published online 24 September 2002 |
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| Keywords: | PACS 42 65 Ky Harmonic generation frequency conversion – 32 80 Wr Other multiphoton processes |
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