两个相对论强烈的激光束在等离子管道中的螺旋共传播
Huanyu Song1,2, Zhengming Sheng1,2,3, Hanzhi Zhao1,2
1Key Laboratory for Laser Plasmas (MOE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
Physical review. E
|December 20, 2023
概括
两个具有直角偏振的强烈激光束可以在等离子体通道中互相旋转和振荡. 这种在等离子体中的受控相互作用在电子加速和辐射生成方面具有潜在的应用.
科学领域:
- 等离子体物理学的物理学
- 非线性光学是非线性光学.
- 激光与等离子体相互作用
背景情况:
- 相对强度激光束对于先进的应用至关重要.
- 控制等离子体通道中的激光传播对于光束操纵至关重要.
- 正角极化可以导致复杂的光束动态.
研究的目的:
- 在一个抛物线等离子体通道中研究两个相对论强烈的激光束与直角偏振的共传播动态.
- 分析激光束中心体和唤醒场的螺旋和振荡行为.
- 探索粒子加速和辐射生成中的潜在应用.
主要方法:
- 使用变量方法的分析推导,以获得激光点大小和横向中心点的合方程.
- 对于激光包裹来说,相对论非线性施罗丁格方程的数值解.
- 三维粒子在细胞 (PIC) 模拟以验证分析和数值结果.
- 对超短激光脉冲和激发激光唤醒场的研究.
主要成果:
- 激光束中心体沿着等离子体通道轴表现出螺旋和振荡运动.
- 振荡的特征频率取决于激光和等离子体参数.
- 由超短脉冲驱动的两个激光唤醒泡也旋转和振荡,模仿脉冲动力学.
- 可以通过调整撞击角度和分离距离来控制光束动态.
结论:
- 该研究提供了一种用于控制激光激光在等离子体中的合的新方法.
- 观察到的现象为电子加速和辐射生成等应用提供了可能性.
- 外部注入的电子束可能会跟随振荡泡的轨迹,从而实现可控加速.
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