Development of near/mid IR differential absorption OPO lidar system for remote gas analysis of the atmosphere

摘要

A differential absorption lidar system was designed on the basis of parametric light generation with nonlinear KTA andKTP crystals, which allow turning laser radiation in the near- and mid-IR spectral regions. Lidar echoes wereexperimentally detected in the 1.8–2.5 and 3–4 μm wavelengths ranges. The results of first in situ measurements of themethane concentration in the mid-IR are given.