The interaction of high-power terahertz radiation from the Novosibirsk free-electron laser at a wavelength of 130μm in atmospheric transparency window with a model aerosol cloud having the known droplet size distribution function has been studied experimentally for the first time. The experimental data are compared with theoretical calculations obtained from solution of the lidar equation for conditions of the experiment.
THz radiation, free-electron laser, remote sensing
1. Siegel P.H. THz Instruments for Space // IEEE. Trans. Antennas Propag. 2007. V. 55, N 11. P. 2957–2965.
2. Racette P., Adler R.F., Wang J.R., Gasiewski A.J., Jackson D.M., Zacharias D.S. An airborne millimeter-wave imaging radiometer for cloud, precipitation, and atmospheric water vapor studies // J. Appl. Ocean. Technol. 1996. V. 13, N 3. P. 610–619.
3. Wu D.L., Pickett H.M., Livesey N.J. Aura MLS THz observations of global cirrus near the tropopause // Geophys. Res. Lett. 2008. V. 35. L15803. DOI: 10.1029/2008GL034233.
4. Mendrok J., Baron P., Kasai Y. Studying the potential of terahertz radiation for deriving ice cloud microphysical information // Proc. SPIE. 2008. V. 7107. DOI: 10.1117/12.800262.
5. Kulipanov G.N., Gavrilov N.G., Knyazev B.A., Kolobanov E.I., Kotenkov V.V., Kubarev V.V., Matveenko A.N., Medvedev L.E., Miginsky S.V., Mironenko L.A., Ovchar V.K., Popik V.M., Salikova T.V., Scheglov M.A., Serednyakov S.S., Shevchenko O.A., Skrinsky A.N., Tcheskidov V.G., Vinokurov N.A. Research highlights from the Novosibirsk 400 W average power THz FEL // Terahertz Sci. Technol. 2008. V. 1, N 2. P. 107–125.
6. URL: http://www.tydex.ru
7. Mezheris R. Lidarnoe distancionnoe zondirovanie. M.: Mir, 1987. 550 p.
8. Ivashhenko M.V., Sherstov I.V. Dal'nost' dejstvija lidara differencial'nogo pogloshhenija na osnove CO2-lazera // Kvant. jelektron. 2000. V. 30, N 8. P. 747–752.