Abstract
Language | English |
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Article number | 255001 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 114 |
Issue number | 25 |
DOIs | |
Publication status | Published - 23 Jun 2015 |
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Keywords
- terahertz radiation
- intense laser pulses
- electron plasma waves
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Bursts of terahertz radiation from large-scale plasmas irradiated by relativistic picosecond laser pulses. / Liao, G. Q. ; Li, Y. T.; Li, C.; Su, L. N.; Zheng, Y.; Liu, M.; Wang, W. M.; Hu, Z. D. ; Yan, W. C. ; Dunn, J.; Nilsen, J.; Hunter, J.; Liu, Y.; Wang, X.; Chen, L. M. ; Ma, J. L. ; Lu, X.; Jin, Z. ; Kodama, R.; Sheng, Z. M.; Zhang, J.
In: Physical Review Letters, Vol. 114, No. 25, 255001, 23.06.2015.Research output: Contribution to journal › Letter
TY - JOUR
T1 - Bursts of terahertz radiation from large-scale plasmas irradiated by relativistic picosecond laser pulses
AU - Liao, G. Q.
AU - Li, Y. T.
AU - Li, C.
AU - Su, L. N.
AU - Zheng, Y.
AU - Liu, M.
AU - Wang, W. M.
AU - Hu, Z. D.
AU - Yan, W. C.
AU - Dunn, J.
AU - Nilsen, J.
AU - Hunter, J.
AU - Liu, Y.
AU - Wang, X.
AU - Chen, L. M.
AU - Ma, J. L.
AU - Lu, X.
AU - Jin, Z.
AU - Kodama, R.
AU - Sheng, Z. M.
AU - Zhang, J.
PY - 2015/6/23
Y1 - 2015/6/23
N2 - Powerful terahertz (THz) radiation is observed from large-scale underdense preplasmas in front of a solid target irradiated obliquely with picosecond relativistic intense laser pulses. The radiation covers an extremely broad spectrum with about 70% of its energy located in the high frequency regime over 10 THz. The pulse energy of the radiation is found to be above 100 μJ per steradian in the laser specular direction at an optimal preplasma scale length around 40–50 μm. Particle-in-cell simulations indicate that the radiation is mainly produced by linear mode conversion from electron plasma waves, which are excited successively via stimulated Raman scattering instability and self-modulated laser wakefields during the laser propagation in the preplasma. This radiation can be used not only as a powerful source for applications, but also as a unique diagnostic of parametric instabilities of laser propagation in plasmas.
AB - Powerful terahertz (THz) radiation is observed from large-scale underdense preplasmas in front of a solid target irradiated obliquely with picosecond relativistic intense laser pulses. The radiation covers an extremely broad spectrum with about 70% of its energy located in the high frequency regime over 10 THz. The pulse energy of the radiation is found to be above 100 μJ per steradian in the laser specular direction at an optimal preplasma scale length around 40–50 μm. Particle-in-cell simulations indicate that the radiation is mainly produced by linear mode conversion from electron plasma waves, which are excited successively via stimulated Raman scattering instability and self-modulated laser wakefields during the laser propagation in the preplasma. This radiation can be used not only as a powerful source for applications, but also as a unique diagnostic of parametric instabilities of laser propagation in plasmas.
KW - terahertz radiation
KW - intense laser pulses
KW - electron plasma waves
UR - http://journals.aps.org/prl/
U2 - 10.1103/PhysRevLett.114.255001
DO - 10.1103/PhysRevLett.114.255001
M3 - Letter
VL - 114
JO - Physical Review Letters
T2 - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 25
M1 - 255001
ER -