Lidar sensing of the atmosphere with gigawatt laser pulses of femtosecond duration

We present the results of sensing of the atmosphere in the condition of a transition 'continent - ocean' zone by means of gigawatt femtosecond pulses of the fundamental and second harmonics of a Ti : sapphire laser. In the regime of multi-frequency sensing (supercontinuum from the fundamental harmonic) the emission lines of the first positive system of the nitrogen molecule have been recorded, while the sensing using of the second harmonic have revealed the possibility of detecting the lines of Raman scattering of nitrogen . The intensity ratio of the line of Raman scattering of nitrogen and the line of elastic scattering at the wavelength of amounts to .