Figure 4
From: Stable multi-GeV electron accelerator driven by waveform-controlled PW laser pulses
(a) Electron energy spectra obtained with different TOD’s for the positively chirped laser pulses with GDD of +450 fs2. The TOD values are given in the figure. The inset graph contains the temporal profile and pulse duration in FWHM of the laser pulse for given TOD. (b) Beam pointing and (c) total charge, divergence and peak energy of electron beams taken from 30 consecutive laser shots with GDD of +450 fs2 and TOD of −4000 fs3. The black, red and blue symbols are the total charge, peak energy and divergence, respectively. The total charge was monitored by the total CCD count of the electron beam profile. The individual symbol in (c) indicates the value for each shot and the lines show the averaged values.
