TY - JOUR

T1 - Interaction of High-Intensity Femtosecond Radiation with Gas Cluster Beam

T2 - Effect of Pulse Duration on Joint Terahertz and X-Ray Emission

AU - Balakin, Alexei V.

AU - Dzhidzhoev, Murat S.

AU - Gordienko, Vyacheslav M.

AU - Esaulkov, Mikhail N.

AU - Zhvaniya, Irina A.

AU - Ivanov, Konstantin A.

AU - Kotelnikov, Igor A.

AU - Kuzechkin, Nikolay A.

AU - Ozheredov, Ilya A.

AU - Panchenko, Vladislav Y.

AU - Savelev, Andrey B.

AU - Smirnov, Mikhail B.

AU - Solyankin, Peter M.

AU - Shkurinov, Alexander P.

N1 - Publisher Copyright: © 2016 IEEE.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - This paper studies the phenomenon of joint generation of terahertz (THz) and X-ray radiation in the argon nanocluster jet under the action of high-power femtosecond laser pulse in both the single-color and dual-color regimes. It was discovered that in a gas cluster beam the pulse duration affects the properties of THz and X-ray emission differently. For the same given total energy of optical pulse in the dual-color excitation regime of cluster medium, more than a five times increase of THz radiation power was observed in comparison with the single-color regime, while the conversion efficiency to the argon X-ray K-line reached 7 × 10-6 and remained unchanged. The possibility of separation of contributions of different beam components into the THz signal was demonstrated experimentally, using contributions from clusters and nonclustered gas as an example. We suggest an interpretation of experimental results based on a theoretical model of cluster ionization that self-consistently predicts the level and dynamics of ionization and electron temperature in the clusters.

AB - This paper studies the phenomenon of joint generation of terahertz (THz) and X-ray radiation in the argon nanocluster jet under the action of high-power femtosecond laser pulse in both the single-color and dual-color regimes. It was discovered that in a gas cluster beam the pulse duration affects the properties of THz and X-ray emission differently. For the same given total energy of optical pulse in the dual-color excitation regime of cluster medium, more than a five times increase of THz radiation power was observed in comparison with the single-color regime, while the conversion efficiency to the argon X-ray K-line reached 7 × 10-6 and remained unchanged. The possibility of separation of contributions of different beam components into the THz signal was demonstrated experimentally, using contributions from clusters and nonclustered gas as an example. We suggest an interpretation of experimental results based on a theoretical model of cluster ionization that self-consistently predicts the level and dynamics of ionization and electron temperature in the clusters.

KW - Femtosecond laser pulses

KW - gas cluster beam/jet

KW - high-intensity radiation

KW - nanoplasma

KW - quadrupole radiation

KW - terahertz (THz) and X-ray emission

KW - FIELDS

KW - LASER-PULSES

KW - SIZE

KW - ATOMIC CLUSTERS

KW - SUPERSONIC JETS

KW - AR

KW - PLASMA

KW - FILAMENT

KW - GENERATION

UR - http://www.scopus.com/inward/record.url?scp=84995451862&partnerID=8YFLogxK

U2 - 10.1109/TTHZ.2016.2617867

DO - 10.1109/TTHZ.2016.2617867

M3 - Article

AN - SCOPUS:84995451862

VL - 7

SP - 70

EP - 79

JO - IEEE Transactions on Terahertz Science and Technology

JF - IEEE Transactions on Terahertz Science and Technology

SN - 2156-342X

IS - 1

M1 - 7740088

ER -