Beam scattering and wavefront distortion have always been an arduous hurdle for free-space optical communications. We demonstrate video communication assisted by laser filamentation through a cloud chamber, benefiting from the shock-wave-induced low-density channel. The optical power measured at the receiver exhibits periodic fluctuations dependent on the repetition rate of ultrashort pulse laser. Thus, to stabilize the communication quality, an automatic gain control unit is necessary. The analyses of receiver power, intensity distribution and eye diagram prove the effectiveness of this method. A scheme for long-distance applications has also been proposed.

中文翻译：

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恶劣条件下激光丝束辅助的1.25 Gb / s视频通信

光束散射和波前畸变一直是自由空间光通信的艰巨障碍。我们演示了通过激波诱导的低密度通道，通过云室中的激光细丝辅助的视频通信。在接收机处测得的光功率表现出周期性波动，这取决于超短脉冲激光的重复率。因此，为了稳定通信质量，需要自动增益控制单元。对接收机功率，强度分布和眼图的分析证明了该方法的有效性。还提出了一种用于长距离应用的方案。