Promises of application of free-electron terahertz laser to remote sensing of the atmosphere
E.G. Kablukova1, A.A. Lisenko2,3, G.G. Matvienko2,3, S.V. Babchenko2, E.N. Chesnokov4
1Institute of Computational Mathematics and Mathematical Geophysics of the Siberian Branch of the RAS, 6, Ac. Lavrentieva ave., 630090, Novosibirsk, Russia
2V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
3National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050,Russia
4V.V. Voevodsky Institute of Chemical Kinetics and Combustion of the Siberian Branch of the RAS, 3 Institutskaya str., 3, 630090, Novosibirsk, Russia
Keywords: THz radiation, free-electron laser, remote sensing
Abstract
The possibility of using the Novosibirsk free-electron laser as a source of terahertz radiation for remote sensing of the near-surface atmosphere is considered. The problem of selection of spectral ranges for sensing is solved in the range 40–250 cm–1. Numerical experiment on simulation of a signal of terahertz lidar based on the Novosibirsk free-electron laser after signal reflection from the cloud base has been performed for particular initial and boundary optical-geometric conditions and the degree of signal extinction at the sensing path. The sensing range for the cloud base in selected atmospheric transparency windows has been estimated as a function of the specific content of settled water at the sensing path.
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