Temporally resolved measurement of electron densities (>10(23) cm(-3)) with high harmonics

被引:112
作者
Theobald, W
Hassner, R
Wulker, C
Sauerbrey, R
机构
[1] Institut für Optik and Quantenelektronik, Friedrich-Schiller-Universität Jena, Jena, D-07743
关键词
D O I
10.1103/PhysRevLett.77.298
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
It is shown experimentally that a high intensity subpicosecond laser impinging on a solid target generates a plasma with an electron density exceeding 10(23) cm(-3). Depending on the electron density, femtosecond high-order harmonics from a gas jet are transmitted through a subpicosecond laser-produced plasma while lower order harmonics are absorbed or reflected. In the present experiment, electron densities up to 4.3 x 10(23) cm(-3) at mean electron energies of 50 to 150 eV are measured and the plasma expansion is mapped out in time with subpicosecond resolution.
引用
收藏
页码:298 / 301
页数:4
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