Single attosecond pulse generation by nonlinear Thomson scattering in a tightly focused intense laser beam

Journal Article · Sun Jan 15 04:00:00 EST 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2164459· OSTI ID:20782469

Pengfei, Lan; Peixiang, Lu; Wei, Cao ^[1]

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1. State Key Laboratory of Laser Technology and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074 (China)

The relativistic nonlinear Thomson scattering of a tightly focused intense laser pulse by an electron is investigated, and the temporal and spectral characters of the radiation are discussed. In a tightly focused laser pulse with an intensity of approximately 10{sup 20} W/cm{sup 2} and a pulse duration of 20 fs, the electron is scattered away from the focus quickly by the ponderomotive force and therefore the radiation emitted at the focus is much higher than that at other regions. As a result, a single ultrashort pulse of 3.8 as is generated and its corresponding spectrum is broadened to 200 orders of the frequency of the driving laser. With increasing the laser intensity, the signal-to-noise of the radiated pulse increases, and the pulse duration decreases. Moreover, the phase behavior of the spectral components and the dependence of the radiated power on the laser intensity are discussed.

• OSTI ID: 20782469
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 13; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRODYNAMICS
ELECTRONS
EMISSION
LASER RADIATION
LASERS
NOISE
NONLINEAR PROBLEMS
PONDEROMOTIVE FORCE
PULSES
RELATIVISTIC RANGE
THOMSON SCATTERING