Multimirror autodyne lidar for local detection of hostile gases.

We describe an autodyne lidar with multiple external mirrors by using an analytical approach presented previously [Appl. Opt. 41, 7087 (2002)].

Analytical estimation of the parameters of autodyne lidar.

An analytical approach for a calculation of the parameters of autodyne lidar is presented. Approximate expressions connecting the absorption coefficient and the distance to the remote target with both the lidar parameters and the measured quantities are obtained. These expressions allow one to retrieve easily the information about the atmosphere from the experimental data.

Parametric laser-reception lidar.

A theoretical analysis and design features of parametric CO(2) laser-reception lidar are reported. Stabilized regular laser radiation intensity oscillations are shown to occur under the laser-reception scheme of the return signal. Results are presented for low frequency cavity mirror oscillations and high instantaneous beat frequency.