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Controlled electron injection into laser wakefields with a perpendicular injection laser pulse
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View: Figures


Image of FIG. 1.
FIG. 1.

Snapshots of longitudinal distributions of electron momenta (dots) and electric fields (lines) of the wakefield at when the two pulses meet (a) and at (b), where the peak amplitudes of the two pulses are and , respectively. The cases with or without the injection pulse are distinguished by red dots or lines and blue dots or lines, respectively.

Image of FIG. 2.
FIG. 2.

Characteristic of the injected electron beam at found with the same laser parameters as in Fig. 1. (a) Electron distributions in the longitudinal phase space . (b) Electron distributions in the coordinate spaces . (c) Electron divergence angle with its longitudinal momentum. (d) Electron energy distribution.

Image of FIG. 3.
FIG. 3.

Features of the trapped electron beam at as a function of (a) the injection pulse amplitude with fixed , (b) the pump pulse amplitude with fixed , (c) the meeting time of the two pulses with fixed and , (d) and the injection pulse duration with fixed and . The charge, energy spread, emittance, and average energy are normalized by , , , and defined in the text.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Controlled electron injection into laser wakefields with a perpendicular injection laser pulse