Spatial and spectral characteristics of nonlinear Thomson scattering in the few-cycle regime
Spatial and spectral characteristics of nonlinear Thomson scattering in the few-cycle regime
复制标题
少周期非线性汤姆逊散射的空间和光谱特性
DOI：
10.1088/1054-660x/23/7/076001
复制
发表时间：
2013
期刊：
影响因子：
1.2
通讯作者：
V. Senecha
中科院分区：
文献类型：
--
作者：
Youwei Tian;Qiuyuan Zhang;Enyu Feng;Huanhuan Liu;Xin Shi;Danting Chen;Lin Chen;Xiaoling Lu;V. Senecha
基于经典辐射理论，从理论和数值计算两方面研究了线偏振强激光脉冲中电子的相对论动力学、非线性汤姆逊散射的全空间和光谱特性。在几个周期的激光脉冲中，电子的相对论动力学敏感地依赖于驱动激光脉冲的初始相位。汤姆逊散射辐射也表现出许多显著的初始相敏特性。对于大多数初始相位，辐射角分布的x-y平面和y-z平面对称性被打破，即，众所周知的四重对称消失了。辐射谱也依赖于初始相位，并且对于大多数初始相位显示出y-z平面不对称性。这些现象可以归因于少周期脉冲的特性。此外，可能的方法来观察这些现象的建议。此外，我们还提出利用非线性汤姆逊散射的初始相敏特性来确定强脉冲的初始相位。
Based on classical radiation theory, the electron relativistic dynamics, full spatial and spectral characteristics of nonlinear Thomson scattering in a linearly polarized intense few-cycle laser pulse have been investigated theoretically and numerically. In the few-cycle laser pulse, the electron relativistic dynamics depends sensitively on the initial phase of the driving laser pulse. The Thomson scattering radiation also shows many remarkable initial phase-sensitive characteristics. For most of the initial phases, the x–y plane and y–z plane symmetry of radiation angular distributions is broken down, i.e., the well-known fourfold symmetry disappears. The radiation spectra also depend on the initial phase and show a y–z plane asymmetry for most initial phases. These phenomena can be attributed to the properties of the few-cycle pulse. Moreover, possible ways to observe these phenomena are suggested. In addition, we propose that the initial phase-sensitive characteristics of nonlinear Thomson scattering can be utilized to determine the initial phase of the intense few-cycle pulse.