Generation of attosecond soft x-ray pulses in a longitudinal space charge amplifier

被引：24

作者：

Dohlus, M. ^{[1
]}

Schneidmiller, E. A. ^{[1
]}

Yurkov, M. V. ^{[1
]}

机构：

[1] Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2011年 / 14卷 / 09期

关键词：

FREE-ELECTRON LASER; INSTABILITY; BEAM; FEL;

D O I：

10.1103/PhysRevSTAB.14.090702

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A longitudinal space charge amplifier (LSCA), operating in soft x-ray regime, was recently proposed. Such an amplifier consists of a few amplification cascades (focusing channel and chicane) and a short radiator undulator in the end. The broadband nature of LSCA supports generation of few-cycle pulses as well as wavelength compression. In this paper we consider an application of these properties of LSCA for generation of attosecond x-ray pulses. It is shown that a compact and cheap addition to the soft x-ray free-electron laser facility FLASH would allow one to generate 60 attosecond (FWHM) long x-ray pulses with the peak power at the 100 MW level and a contrast above 98%.

引用

页数：10

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