TY - GEN
T1 - Narrowband Thz generation by colliding plasma waves with different transverse sizes
AU - Annenkov, Vladimir V.
AU - Timofeev, Igor V.
AU - Volchok, Evgeniia P.
AU - Khudyakov, Vadim K.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/10/25
Y1 - 2018/10/25
N2 - It has been recently found that nonlinear interaction of counterpropagating plasma wakes with different potential profiles can generate high-power narrowband THz radiation. Such radiation is concentrated near the second harmonic of the plasma frequency with the line width of several percent and can easily escape from the plasma. In this work, we discuss effects of ion dynamics on THz emission duration in the case of short laser drivers and study whether the radiation efficiency in such a scheme can be significantly increased by using long-pulse electron beams driving plasma waves via the two-stream instability. This mechanism can be a basis for efficient and easily tunable sources of narrow-band terahertz radiation capable of reaching the gigawatt power level and millijoule energy content.
AB - It has been recently found that nonlinear interaction of counterpropagating plasma wakes with different potential profiles can generate high-power narrowband THz radiation. Such radiation is concentrated near the second harmonic of the plasma frequency with the line width of several percent and can easily escape from the plasma. In this work, we discuss effects of ion dynamics on THz emission duration in the case of short laser drivers and study whether the radiation efficiency in such a scheme can be significantly increased by using long-pulse electron beams driving plasma waves via the two-stream instability. This mechanism can be a basis for efficient and easily tunable sources of narrow-band terahertz radiation capable of reaching the gigawatt power level and millijoule energy content.
UR - https://www.scopus.com/pages/publications/85056849295
U2 - 10.1109/IRMMW-THz.2018.8510421
DO - 10.1109/IRMMW-THz.2018.8510421
M3 - Conference contribution
AN - SCOPUS:85056849295
T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
BT - 2018 43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018
PB - IEEE Computer Society
T2 - 43rd International Conference on Infrared Millimeter and Terahertz Waves, IRMMW-THz 2018
Y2 - 9 September 2018 through 14 September 2018
ER -