Enhanced harmonic conversion efficiency in the self-guided propagation of femtosecond ultraviolet laser pulses in argon

被引：0
|
作者：
N. Kortsalioudakis
M. Tatarakis
N. Vakakis
S.D. Moustaizis
M. Franco
B. Prade
A. Mysyrowicz
N.A. Papadogiannis
A. Couairon
S. Tzortzakis
机构：
[1] Technical University of Crete,Matter Structure and Laser Physics Laboratory, Department of Sciences, Physics Section
[2] Technological Educational Institute of Crete,Laboratoire d’Optique Appliquée, CNRS UMR 7639
[3] ENSTA – Ecole Polytechnique,Centre de Physique Théorique
[4] Technological Educational Institute of Crete,Laboratoire d’Utilisation des Lasers Intenses
[5] Ecole Polytechnique,undefined
[6] CNRS UMR 7644,undefined
[7] Ecole Polytechnique,undefined
[8] CNRS UMR 7605,undefined
来源：
Applied Physics B | 2005年 / 80卷
关键词：
Harmonic Generation; Phase Match; Interaction Length; Maker Fringe; Drive Laser Pulse;
D O I：
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中图分类号：
学科分类号：
摘要：
Harmonic generation during the self-guided propagation of femtosecond ultraviolet (UV) laser pulses (248-nm, 450-fs) in argon is investigated. The third (82.7-nm) and fifth (49.6-nm) harmonics are generated in the UV filament. The energy-conversion efficiencies for the harmonics are found to be at least two orders of magnitude higher than those reported in the literature for similar gas pressures. The enhancement is attributed to the quasi-phase matching of the harmonics due to the self-guiding of the driving pulse.
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页码：211 / 214
页数：3
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