13 June 2018 Accuracy measurements of large-aperture femtosecond laser pulses in multipetawatt laser facility
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Abstract
A model is presented to analyze the effect of chromatic aberration of the spatial filter lenses on the compressed pulse duration. The parameters of the SHENGUANG (SG) II 5 PW laser system are demonstrated as examples. The numerical simulation results show that the compressed pulse duration with full aperture is increased by 3 times compared with the ideal compressed pulse duration in the case of chromatic aberration of the lenses. The result of full-aperture measurement at the SG II 5 PW laser system is in good agreement with the theoretical calculation. In the case of full-aperture measurement, the shortest compressed pulse duration is obtained by adjusting the compressor to compensate for the phase aberration introduced by the chromatic aberration of the spatial filter lenses at the SG II 5 PW laser facility. These results are helpful in finding an optimized pulse duration, considering the chromatic aberration of lenses in the femtosecond laser facility, and in obtaining a deep understanding of the effect of chromatic aberration of lenses on the pulse contrast ratio and pulse duration in ultrashort laser systems.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Qingwei Yang, Qingwei Yang, Ziruo Cui, Ziruo Cui, Jun Kang, Jun Kang, Ailin Guo, Ailin Guo, Haidong Zhu, Haidong Zhu, Meizhi Sun, Meizhi Sun, Ping Zhu, Ping Zhu, Qi Gao, Qi Gao, Xinglong Xie, Xinglong Xie, Jianqiang Zhu, Jianqiang Zhu, } "Accuracy measurements of large-aperture femtosecond laser pulses in multipetawatt laser facility," Optical Engineering 57(6), 064103 (13 June 2018). https://doi.org/10.1117/1.OE.57.6.064103 . Submission: Received: 12 March 2018; Accepted: 25 May 2018
Received: 12 March 2018; Accepted: 25 May 2018; Published: 13 June 2018
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