Fig. 9 | Scientific Reports

Fig. 9

From: Ultra-high-brightness and tuneable attosecond-long electron beams with the laser wake field acceleration

Fig. 9

Generation of the two-pulses driver train by using delay rings. The rings structure is composed by quartz rings of thickness 98 \(\upmu\)m glued or etched onto a transparent substrate equipped with a hole. Panels (a) and (c): After the passage through the temporal splitter, two multi-ring structures delayed by 151 fs are generated. Panels (b) and (d): In the far field, each of the two structures evolves into quasi-gaussian pulses, with minimum waist of \(w_{0;d}=30 \; {\upmu m}\).

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