Abstract
Development status of a double-line table top beat wave electron laser acceleration system is discussed. The advantage of beat wave driven laser accelerator is described here using 1D-PIC simulation comparing with a single laser wake-field acceleration concerning an electric field excitation. As for experimental status, double line different color pulses (central wavelength with 795 nm and 805 nm, respectively) were successfully amplified to 30 mJ as a single overlapping beam with a hybrid chirped pulse amplification system, Optical Parametric Chirped Pulse Amplification (OPCPA) and Ti -Sap multi-pass amplifier pumped by YAG lasers, and then compressed into ps time duration. Amplified double-color pulse drove beating pulse bunches of 300 fs time duration which was identified by an autocorrelation trace. In order to investigate plasma sustainment in cm order, amplified beam illuminated a 2 cm in-length glass capillary and then the laser penetration in the capillary was confirmed.
Published Version
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