Apeksimov D V, Geints Yu E, Zemlyanov A A, Kabanov A M, Oshlakov V K, Petrov A V, Matvienko G G
Appl Opt. 2018 Nov 20;57(33):9760-9769. doi: 10.1364/AO.57.009760.
The results of experiments and theoretical modeling of the multiple filamentation of terawatt-power femtosecond laser pulses on a 137 m long air path are presented. We use a multielement optical setup consisting of a Galilean telescope and a deformable bimorph mirror, which allows construction for the desired pulse wavefront at the optical path entrance. By introducing controlled aberrations of the pulse phase profile, we demonstrate the wide-ranging manipulations on the position and spatial structure of the filamentation region. For the first time, to the best of our knowledge, the stable wide-aperture (5 cm in diameter) ring-shaped spatial lattice of high-intense light channels is experimentally realized, which can persist over hundreds of meters in air.
本文展示了太瓦级飞秒激光脉冲在137米长的空气路径上多次成丝的实验结果和理论建模。我们使用了一个由伽利略望远镜和可变形双压电晶片镜组成的多元件光学装置，该装置能够在光路入口处构建所需的脉冲波前。通过引入脉冲相位分布的可控像差，我们展示了对成丝区域的位置和空间结构进行的广泛操控。据我们所知，首次通过实验实现了稳定的大孔径（直径5厘米）高强度光通道环形空间晶格，其在空气中可延续数百米。
