Development of Near/Mid IR differential absorption OPO lidar system for sensing of atmospheric gases

Abstract The differential absorption lidar system based on optical parametric oscillators with nonlinear KTA and KTP crystals which allow laser radiation tuning both in the near and in the middle IR spectral region is described. Lidar echo signals have been experimentally recorded in the 1.8–2.5 and 3–4 μm wavelength ranges. The results of H 2 O and CO 2 profile measurements along the horizontal sounding path are presented.