caa a22 4500 445305738 CHVBK 20180317142612.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10762-011-9817-2 doi (NATIONALLICENCE)springer-10.1007/s10762-011-9817-2 On the Peculiarities of THz Radiation Generation in a Laser Induced Plasmas [Elektronische Daten] [Evgeny Suvorov, Rinat Akhmedzhanov, Daniil Fadeev, Igor Ilyakov, Vyacheslav Mironov, Boris Shishkin] Experimental data on terahertz generation from laser spark created by linearly polarized femtosecond pulses focused by spherical lenses are presented. Specific features of generated terahertz radiation registered in the latest experiments for the case of monochromatic laser pulse definitely demonstrate severe deviation from the axial symmetry, which results from conventionally used model for low-frequency current excitation in a laser spark due to the ponderomotive action from fs laser pulse. The new approach to the theoretical interpretation basing on kinetic description for electron distribution function has been developed with taking into account peculiarities of the tunnel ionization under the action of linearly polarized laser field. A simple generalization of developed model for the case of applying external dc electric field to the region of gas breakdown allowed to describe the modification of terahertz radiation pattern depending on the value of external dc field. Springer Science+Business Media, LLC, 2011 Terahertz radiation nationallicence Laser spark nationallicence Femtosecond pulse nationallicence Tunnel ionization nationallicence Suvorov Evgeny Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut Akhmedzhanov Rinat Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut Fadeev Daniil Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut Ilyakov Igor Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut Mironov Vyacheslav Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut Shishkin Boris Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/10(2011-10-01), 1243-1252 1866-6892 32:10<1243 2011 32 10762 https://doi.org/10.1007/s10762-011-9817-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-011-9817-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Suvorov Evgeny Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Akhmedzhanov Rinat Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Fadeev Daniil Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Ilyakov Igor Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Mironov Vyacheslav Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 700 1- Shishkin Boris Institute of Applied Physics of Russian Academy of Sciences, 46 Ul'yanov Street, 603950, Nizhny Novgorod, Russia aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/10(2011-10-01), 1243-1252 1866-6892 32:10<1243 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer