Matter and Radiation at Extremes, Volume. 8, Issue 2, 024001(2023)
Generation of synchronized x-rays and mid-infrared pulses by Doppler-shifting of relativistically intense radiation from near-critical-density plasmas
Fig. 1. Solution of the equations of the relativistic electron spring model for a Gaussian pulse of duration 3 fs and amplitude
Fig. 2. Result of a 1D PIC simulation for a Gaussian laser pulse of duration 20 fs and amplitude
Fig. 3. Comparison of Fourier spectra for the incident pulse (blue dotted line), the reflected pulse obtained from the relativistic electron spring model (orange dashed line), and the reflected pulse obtained from the 1D PIC simulation (green full line). The inset shows the time profile of the pulse obtained after filtering the reflected signal in the 1D PIC simulation in the range 3–20
Fig. 4. Dependence of the Fourier spectrum of the reflected signal obtained in 1D PIC simulation of the plasma density. The data shown are for a laser pulse amplitude
Fig. 5. Dependence of the energy efficiency of the conversion of the incident laser radiation into the reflected signal in different ranges for different amplitudes of the pulse. The results are shown for 1D PIC simulations with immobile ions. For comparison, the result for the case of mobile ions is also presented. The laser pulse duration is 20 fs, and its amplitude is given in the legend.
Fig. 6. Result of a 2D PIC simulation of the interaction of a Gaussian pulse of duration 20 fs, width 5
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Nikita A. Mikheytsev, Artem V. Korzhimanov. Generation of synchronized x-rays and mid-infrared pulses by Doppler-shifting of relativistically intense radiation from near-critical-density plasmas[J]. Matter and Radiation at Extremes, 2023, 8(2): 024001
Category: Letters
Received: Jul. 29, 2022
Accepted: Dec. 25, 2022
Published Online: Apr. 12, 2023
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