Coupling coefficient enhanced by prepulse in laser plasma propulsion

Abstract

Compared with direct ablation, a prepulse is used to enhance the coupling coefficient in laser plasma propulsion. It is found that the coupling coefficient is related with the delay times between the main beam and the prepulse. At a delay time of 12 ns, the coupling coefficient reaches the maximum of 5.8 × 10⁻⁵ N/W.

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