High-order harmonic generation in a partially ionized medium

被引:29
|
作者
Moreno, P
Plaja, L
Roso, L
机构
[1] Depto. de Física Aplicada, Universidad de Salamanca
关键词
D O I
10.1364/JOSAB.13.000430
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The harmonic spectra generated by atoms in the presence of an ionized neighborhood are investigated. Numerical calculations in a one-dimensional model show an increase of the maximum harmonic energy radiated that leads to photon frequencies well beyond the single-atom cutoff I-p + 3.17U(p). We identify these harmonics with those generated when the atom's detached electron is captured by a neighboring ion. By means of classical considerations, we give simple laws for the new harmonic cutoff in the tunneling and the multiphoton ionization regimes. (C) 1996 Optical Society of America
引用
收藏
页码:430 / 435
页数:6
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