Visualization of the Spatio-Temporal Structure of a Pulsed Photoelectron Beam Formed by Femtosecond Laser Radiation

被引：3
|
作者：
Aseev, S. A. [1 ]
Mironov, B. N. [1 ]
Minogin, V. G. [1 ]
Chekalin, S. V. [1 ]
Letokhov, V. S. [1 ]
机构：
[1] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
来源：
JETP LETTERS | 2009年 / 90卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
TRANSMISSION; IONS;
D O I：
10.1134/S0021364009130049
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A method based on an original electron microscope created for investigating photoelectron beams is presented. It ensures a nanometer spatial resolution and picosecond time resolution. Electrons appearing when a metal needle is irradiated by femtosecond laser pulses are transmitted through a dielectric microcapillary and are subjected to a ponderomotive potential created by femtosecond laser radiation focused near the capillary tip. The position-sensitive detection scheme allows for the detection of the spatial profile of a photoelectron beam with a magnification of K congruent to 4 x 10(4). The time structure of the photoelectron beam is visualized by scanning the delay time between laser pulses irradiating the needle and a laser pulse focused near the capillary tip.
引用
收藏
页码：13 / 17
页数：5
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