A scheme to generate high field terahertz (THz) pulses by using tailored laser pulses interaction with a gas target is proposed. The laser wakefield based THz source is emitted from the asymmetric laser shape induced plasma transverse transient net currents. Particle-in-cell simulations show that THz emission with electric filed strength over 1 GV/cm can be obtained with incident laser at level, and the corresponding energy conversion efficiency is more than . The intensity scaling holds up to high field strengths. Such a source also has a broad tunability range in amplitude, frequency spectra, and temporal shape.
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Research Article| June 17 2013
High field terahertz pulse generation from plasma wakefield driven by tailored laser pulses
Zi-Yu Chen; High field terahertz pulse generation from plasma wakefield driven by tailored laser pulses. Appl. Phys. Lett. 17 June 2013; 102 (24): 241104. https://doi.org/10.1063/1.4811552
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