ma zairu, feng guoying, chen jianguo, et al. Influences of synchronization time jitter in OPCPA system on contrast ratio of femto-second pulse[J]. High Power Laser and Particle Beams, 2009, 21.
Citation:
ma zairu, feng guoying, chen jianguo, et al. Influences of synchronization time jitter in OPCPA system on contrast ratio of femto-second pulse[J]. High Power Laser and Particle Beams, 2009, 21.
ma zairu, feng guoying, chen jianguo, et al. Influences of synchronization time jitter in OPCPA system on contrast ratio of femto-second pulse[J]. High Power Laser and Particle Beams, 2009, 21.
Citation:
ma zairu, feng guoying, chen jianguo, et al. Influences of synchronization time jitter in OPCPA system on contrast ratio of femto-second pulse[J]. High Power Laser and Particle Beams, 2009, 21.
Based on the propagation model for the wideband ultra-short pulse, the coupled equations which determine the interaction process among pump, idle and signal pulses in the LBO crystal are studied by the fourth-order Runge-Kutta methods. The simulation results are as follows: the synchronization time jitter induces the pedestal generation, which possesses plentiful energy and can not be removed in the compression stage, therefore, the pulse duration stretches and the contrast ratio of the femto-second pulses decreases seriously, for example, the prepulse stretches from 0.2 ps to 0.7 ps when the synchronization time jitter changed from 0 to 150 ps; Using the longer duration and smoother shape pump pulse can restrain the time jitter effectively, and choosing suitable length of the nonlinear cr
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