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arXiv · 2306.12743

Self-compression of ultrahigh-peak-power lasers

Renjing Chen·Wenhai Liang·Yilin Xu·Xiong Shen·Peng Wang·Jun Liu·Ruxin Li
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Abstract

Pulse self-compression is a simple and economical method for improving the peak power of ultra-intense laser pulses. By solving a modified nonlinear Schrodinger equation considering the fifth-order susceptibility, we found that self-compression appeared even in normally dispersive medium owing to the negative fifth-order susceptibility inducing a mass of negative frequency chirp. Furthermore, negatively pre-chirped pulses allow for self-compression at lower intensity, avoiding medium damage. We numerically analyze the optimal choice of pre-chirp, input intensity, and medium length. A proof-of-principle experiment successfully proves the above theoretical findings. It is expected that petawatt or even exawatt laser pulses with 25 fs/15 fs transform limited pulse duration can be self-compressed to about 9.9 fs/7.6 fs in normally dispersive medium, such as fused silica glass plate.

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Renjing Chen, Wenhai Liang, Yilin Xu, Xiong Shen, Peng Wang, Jun Liu, Ruxin Li. 2023-06-22. Self-compression of ultrahigh-peak-power lasers. https://arxiv.org/abs/2306.12743

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