| Autor: |
Platonenko, Viktor T., Strelkov, Vasily V., Ferrante, Gaetano |
| Zdroj: |
Journal of the Optical Society of America B: Optical Physics; July 2002, Vol. 19 Issue: 7 p1611-1619, 9p |
| Abstrakt: |
We investigate theoretically high-order harmonic generation in gases and show that, if the target thickness is high, off-axial phase matching is of importance. Results of a numerical study of harmonic generation that takes into account the self-action of the laser pulse are presented. We show that self-guiding of the laser pulse in a noble gas makes possible off-axially phase-matched high harmonic generation if some easily ionizable gas is added to the main generating gas. In calculations for such mixtures we obtained conversion efficiencies as great as approximately 10^−3–10^−2 for the 33rd harmonic of a Ti:sapphire laser and approximately 10^−4 for the 121st harmonic. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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