Towards gigawatt terahertz emission by few-cycle laser pulses

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3614522· OSTI ID:22046901

Weimin, Wang ^[1]; Kawata, Shigeo ^[2]; Zhengming, Sheng; Jie, Zhang ^[1]; Yutong, Li ^[1]

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1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)
2. Graduate School of Engineering, Utsunomiya University, 7-1-2 Yohtoh, Utsunomiya 321-8585 (Japan)

It is shown by analysis and simulations that an extremely powerful terahertz (THz) radiation can be produced by a few-cycle laser pulse in a tenuous plasma. The THz amplitude scales linearly with the laser amplitude as well as with the sine of the laser carrier-envelope phase, and in particular, it increases exponentially with the decrease of the laser duration. For example, the THz amplitude increases by near 2 orders of magnitude as the laser duration decreases from one and a half cycles to one cycle; a single-cycle laser of 200 TW can drive the THz radiation of 1 GW with the energy conversion efficiency higher than 10{sup -4}.

• OSTI ID: 22046901
• Journal Information: Physics of Plasmas, Vol. 18, Issue 7; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
BEAM-PLASMA SYSTEMS
EFFICIENCY
EMISSION
ENERGY CONVERSION
GIGAWATT POWER RANGE
LASER RADIATION
LASER TARGETS
LASER-PRODUCED PLASMA
LASERS
LIGHT TRANSMISSION
PLASMA SIMULATION
PULSED IRRADIATION
PULSES