弱立方损耗线性介质中脉冲光束快速碰撞的强效应
摘要
我们研究了在因非简并双光子吸收而产生的弱立方损耗线性介质中，脉冲光束之间的快速碰撞。我们引入了一种带两个小参数的微扰方法，并借此得到脉冲光束形状与振幅因碰撞而产生变化的一般公式。此外，我们利用该方法设计并刻画了可导致强局域与非局域强度衰减效应的碰撞构型。两种构型下脉冲光束形状的碰撞诱导变化值，比先前快速双脉冲碰撞研究所得值大一到两个数量级。进而，我们表明对于非局域构型，碰撞诱导振幅偏移对两脉冲光束一阶色散系数之差的曲线具有两个局部极小值。该发现首次观测到该曲线偏离此前所有弱非线性损耗下快速双脉冲碰撞研究中得到的常见漏斗形。尽管存在强碰撞诱导效应，我们的微扰理论预测与受扰线性传播模型的数值模拟结果吻合良好。我们的结果可用于多序列光通信链路及脉冲光束整形。
引用
@article{arxiv.2209.09113,
title = {Strong effects of fast collisions between pulsed optical beams in a linear medium with weak cubic loss},
author = {Avner Peleg and Toan T. Huynh},
journal= {arXiv preprint arXiv:2209.09113},
year = {2024}
}
备注
44 pages, 12 figures. The paper contains a brief description of a generalization of the perturbation approach that was introduced in arXiv:2102.07438 for fast collisions between time independent optical beams. The paper is devoted to an investigation of strong effects in fast collisions between pulsed optical beams, whereas in arXiv:2102.07438, only weak collision-induced effects for time-independent beams were considered.