Backward Terahertz Radiation from a Two-Color Femtosecond Laser Filament


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Abstract

We report the first experimental observation of backward terahertz emission from the two-color laser induced plasma filament in air. The ratio of measured forward-to-backward terahertz radiation is ∼25/1. This result agrees with numerical simulations based on interferometric model assuming 0.3 mm long plasma source.

About the authors

A. A. Ushakov

Prokhorov General Physics Institute; Faculty of Physics; International Laser Center; Department of Physics

Author for correspondence.
Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 119991; Moscow, 119991; Tokyo, 113-8654

M. Matoba

Department of Physics

Email: ushakov.aleksandr@physics.msu.ru
Japan, Tokyo, 113-8654

N. Nemoto

Department of Physics

Email: ushakov.aleksandr@physics.msu.ru
Japan, Tokyo, 113-8654

N. Kanda

RIKEN Center for Advanced Photonics; Photon Science Center

Email: ushakov.aleksandr@physics.msu.ru
Japan, Tokyo, 351-0198; Tokyo, 113-8654

K. Konishi

Institute for Photon Science and Technology

Email: ushakov.aleksandr@physics.msu.ru
Japan, Tokyo, 113-8654

P. A. Chizhov

Prokhorov General Physics Institute

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991

N. A. Panov

Faculty of Physics; International Laser Center

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 119991

D. E. Shipilo

Faculty of Physics; International Laser Center

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 119991

V. V. Bukin

Prokhorov General Physics Institute

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991

M. Kuwata-Gonokami

Department of Physics

Email: ushakov.aleksandr@physics.msu.ru
Japan, Tokyo, 113-8654

J. Yumoto

Department of Physics; Institute for Photon Science and Technology

Email: ushakov.aleksandr@physics.msu.ru
Japan, Tokyo, 113-8654; Tokyo, 113-8654

O. G. Kosareva

Faculty of Physics; International Laser Center

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 119991

S. V. Garnov

Prokhorov General Physics Institute; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 115409

A. B. Savel’ev

Faculty of Physics; International Laser Center

Email: ushakov.aleksandr@physics.msu.ru
Russian Federation, Moscow, 119991; Moscow, 119991

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