Large temporal window and high-resolution single-shot cross-correlator with two separate measurement channels

Jingui Ma; Xiaoping Ouyang; Liangze Pan; Peng Yuan; Dongfang Zhang; Jing Wang; Guoqiang Xie; Jianqiang Zhu; Liejia Qian

doi:10.1017/hpl.2022.28

Journals >High Power Laser Science and Engineering >Volume 10 >Issue 6 >Page 06000e43 > Article

High Power Laser Science and Engineering
Vol. 10, Issue 6, 06000e43 (2022)

Large temporal window and high-resolution single-shot cross-correlator with two separate measurement channels

Jingui Ma¹, Xiaoping Ouyang^2、*, Liangze Pan², Peng Yuan¹, Dongfang Zhang¹, Jing Wang¹, Guoqiang Xie¹, Jianqiang Zhu², and Liejia Qian^1、3

Author Affiliations

¹Key Laboratory for Laser Plasmas (MOE), Collaborative Innovation Center of IFSA, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China

²Joint Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China

³Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China

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DOI: 10.1017/hpl.2022.28 Cite this Article Set citation alerts

Jingui Ma, Xiaoping Ouyang, Liangze Pan, Peng Yuan, Dongfang Zhang, Jing Wang, Guoqiang Xie, Jianqiang Zhu, Liejia Qian. Large temporal window and high-resolution single-shot cross-correlator with two separate measurement channels[J]. High Power Laser Science and Engineering, 2022, 10(6): 06000e43 Copy Citation Text

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Abstract

In strong-field physics experiments with ultraintense lasers, a single-shot cross-correlator (SSCC) is essential for fast optimization of the pulse contrast and meaningful comparison with theory for each pulse shot. To simultaneously characterize an ultrashort pulse and its long pedestal, the SSCC device must have both a high resolution and a large temporal window. However, the resolution and window in all kinds of single-shot measurement contradict each other in principle. Here we propose and demonstrate a novel SSCC device with two separate measurement channels: channel-1 for the large-window pedestal measurement has a moderate resolution but a large window, while channel-2 for the ultrashort pulse measurement has a small window but a high resolution; this allows the accurate characterization of the pulse contrast in a single shot. A two-channel SSCC device with a 200-fs resolution and 114-ps window has been developed and tested for its application in ultraintense lasers at 800 nm.

Keywords

pulse contrast single-shot cross-correlator ultrashort ultraintense laser

$$\begin{align}\Delta T = \frac{W}{c}\left({n}_{\mathrm{T}}\sin \alpha +{n}_{\mathrm{S}}\sin \beta \right),\end{align}$$

((1))