论文标题
雪崩电离介导的长波红外激光脉冲的自我引导
Self-guiding of long-wave infrared laser pulses mediated by avalanche ionization
论文作者
论文摘要
强烈的长波红外（LWIR）激光脉冲的非线性自引导繁殖由于长波长在长波长下自我焦点崩溃而引起了重大兴趣。这有望在单丝中传播非常高的功率，而不是束分解和多丝。在这里，使用空气中LWIR电离过程的最新图片，我们提供了广泛的模拟，表明以气溶胶为中心的孤立的雪崩地点可以阻止自我关注，从而为室外环境中中等强度的LWIR脉冲提供了自导的途径。
Nonlinear self-guided propagation of intense long-wave infrared (LWIR) laser pulses is of significant recent interest owing to the high critical power for self-focusing collapse at long wavelengths. This promises transmission of very high power in a single filament as opposed to beam breakup and multi-filamentation. Here, using the most current picture of LWIR ionization processes in air, we present extensive simulations showing that isolated avalanche sites centered on aerosols can arrest self-focusing, providing a route to self-guided propagation of moderate intensity LWIR pulses in outdoor environments.
