论文标题
使用极化门控技术，非线性康普顿散射的狭窄带宽伽玛梳子
Narrow bandwidth gamma comb from nonlinear Compton scattering using the polarization gating technique
论文作者
论文摘要
非线性康普顿散射是明亮伽马射线的有前途的来源。一方面，使用易于使用的强烈激光脉冲来散射能量电子，从而显着增加了总光子的产量，但另一方面，由于激光脉冲形状引起的头孢瘤效应。在本文中，我们建议通过使用极化门控技术来避免谐波拓宽谐波 - 一种众所周知的方法，用于构建具有时间变化的激光脉冲。我们表明，通过仅将谐波发射限制到脉冲峰附近的区域，在脉冲峰值（线性是线性的）中，可以在伽马区域产生明亮的狭窄带宽梳子。
Nonlinear Compton scattering is a promising source of bright gamma-rays. Using readily available intense laser pulses to scatter off the energetic electrons on the one hand allows to significantly increase the total photon yield, but on the other hand leads to a dramatic spectral broadening of fundamental emission line as well as its harmonics due to the laser pulse shape induced ponderomotive effects. In this paper we propose to avoid ponderomotive broadening in harmonics by using the polarization gating technique - a well-known method to construct a laser pulse with temporally varying polarization. We show that by restricting harmonic emission only to the region near the peak of the pulse, where the polarization is linear, it is possible to generate a bright narrow bandwidth comb in the gamma region.
