Open AccessHigh-intensity THz pulse generation by TW laser radiation in ionized gas and nonlinear crystals
Author(s) -
Maxim Nazarov,
A. V. Mitrofanov,
P. M. Solyankin,
Z. Ch. Margushev,
M. V. Chashin,
А.П. Шкуринов,
D. A. SidorovBiryukov,
V. Ya. Panchenko
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1556/1/012008
Subject(s) - laser , filamentation , terahertz radiation , optical rectification , optics , femtosecond , physics , electric field , ultrashort pulse , optoelectronics , nonlinear optics , quantum mechanics
Intense electromagnetic fields can be obtained now in THz frequency range. THz pulses with electric field intensity above 1 MV/cm are now requested for strong-field applications like particle acceleration, short electron bunches measurements, controlling the state of the matter. The advantage of a THz pulse in comparison with the visible frequency range is the almost non-oscillating field that interacts with charged particles more efficiently. The advantage over a direct field is the ability to remotely focus this radiation in space and in time. Except for the huge free-electron lasers facilities, the only way to get THz pulses of MV/cm intensity is the conversion of high-power femtosecond laser pulses. We compare two ways of generating intense THz pulses using the radiation of TW and GW laser systems operating at 800 nm. They are two-color filamentation in gas and optical rectification in nonlinear crystals. The prospects for scaling of THz generation methods for a petawatt laser are discussed.