High-Gain Thompson-Scattering X-Ray Free-Electron Laser by Time-Synchronic Laterally Tilted Optical Wave

被引：36

作者：

Chang, Chao ^{[1
]}

Tang, Chuanxiang ^{[2
]}

Wu, Juhao ^{[1
]}

机构：

[1] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94309 USA

[2] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 06期

关键词：

ER-FIBER LASERS; PLASMA ACCELERATOR; PULSE; FEMTOSECOND; DIFFRACTION;

D O I：

10.1103/PhysRevLett.110.064802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel approach to generating coherent x rays with 10(9)-10(10) photons and femtoseconds duration per laser pulse is proposed. This high intensity x-ray source is realized first by the pulse front tilt of a lateral fed laser to extend the electron-laser synchronic interaction time by several orders, which accomplishes the high-gain free-electron-laser-type exponential growth process and coherent emission with highly microbunched electron beam. Second, two methods are presented to enhance the effective optical undulator strength parameter. One is to invoke lenses to focus two counterpropagating lasers that are at normal incidence to the electron beam as a transverse standing wave; the other is to invent a periodic microstructure that can significantly enhance the center electromagnetic field realized by a resonant standing wave and the quadrupole waveguides. The energy coupling efficiency between the electron beam and laser is therefore greatly improved to generate the high brightness x rays, which is demonstrated by analytical and simulation results. DOI: 10.1103/PhysRevLett.110.064802

引用

页数：5

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