Teramobile: Study of long-distance propagation of fs-TW laser pulses in air, and atmospheric applications: Lidar remote sensing, lightning control

激光雷达（光探测和测距）提供大气成分的三维和时间分辨分析。这些数据对于了解污染的动态和验证全球气候的数值模式或用于预测城市污染峰值的数值模式至关重要。然而，目前激光雷达技术的应用受到以下几点的限制：激光雷达基于瑞利和米氏后向散射，其散射激光脉冲几乎是各向同性的。因此，激光雷达信号随着探测立体角的减小而减弱，限制了测量范围。激光雷达能够探测到的气体污染物的数量受到目前能够产生具有广泛可调性的高能激光脉冲的能力的限制，特别是在红外波段。今天，只有强吸收紫外线的化合物，如NO

Lidar (Light Detection and Ranging) provides a three-dimensional and time-resolved analysis of compositon of the atmosphere. These data are essential in order to understand the dynamics of pollution and to validate numerical models of the global climate or those used to forecast urban pollution peaks. However, the applications of present Lidar technology are limited by following points: lidars are based on Rayleigh and Mie backscattering which scatter laser pulses almost isotropically. Hence, Lidar signals decrease strongly with the detecting solid angle, which limits the measuring range. The number of gaseous pollutants that can be detected by Lidar is limited by the present ability to generate high energy laser pulses with broad tunability, especially in the infrared. Today, only compounds strongly absorbing in the UV, such as NO