Figure 4
From: Isolated terawatt attosecond hard X-ray pulse generated from single current spike
Effect of the energy and the wavelength of a modulation laser on the current spike formation. (a–c) Higher laser energy leads to higher energy modulation in the electron beam. Here, we examine the effect of the energy of a modulation laser in view of different values of energy modulation (Δγ) in the electron beam: Δγ = 10 (in red color), 20 (in green color), and 30 (in blue color) at a wavelength of 800 nm for the modulation laser. (d–f) Effect of the wavelength of the modulation laser: 800 nm (in red color), 1600 nm (in green color), and 2400 nm (in blue color) for Δγ = 20. (a,d) Energy of the electron beam is modulated after a wiggler. (b,e) The distribution is distorted in the phase space after a chicane. (c,f) Current profile of the electron beam after chicane, showing a current spike.
