Diagnosis of focal spots at relativistic intensity utilizing coherent radiation from laser-driven flying electron sheets

Xu Shirui; Pan Zhuo; Gao Ying; Zhao Jiarui; Chen Shiyou; Mei Zhusong; Chen Xun; Peng Ziyang; Liu Xuan; Liang Yulan; Xu Tianqi; Song Tan; Wu Qingfan; Zhang Yujia; Liu Zhipeng; Zhang Zihao; Chen Haoran; Han Qihang; Shen Jundong; Hua Chenghao; Zhu Kun; Zhao Yanying; Lin Chen; Yan Xueqing; Ma Wenjun

doi:10.1063/5.0255211

Volume 10 Issue 2

Mar. 2025

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Xu Shirui, Pan Zhuo, Gao Ying, Zhao Jiarui, Chen Shiyou, Mei Zhusong, Chen Xun, Peng Ziyang, Liu Xuan, Liang Yulan, Xu Tianqi, Song Tan, Wu Qingfan, Zhang Yujia, Liu Zhipeng, Zhang Zihao, Chen Haoran, Han Qihang, Shen Jundong, Hua Chenghao, Zhu Kun, Zhao Yanying, Lin Chen, Yan Xueqing, Ma Wenjun. Diagnosis of focal spots at relativistic intensity utilizing coherent radiation from laser-driven flying electron sheets[J]. Matter and Radiation at Extremes, 2025, 10(2): 027202. doi: 10.1063/5.0255211

Citation:

Xu Shirui, Pan Zhuo, Gao Ying, Zhao Jiarui, Chen Shiyou, Mei Zhusong, Chen Xun, Peng Ziyang, Liu Xuan, Liang Yulan, Xu Tianqi, Song Tan, Wu Qingfan, Zhang Yujia, Liu Zhipeng, Zhang Zihao, Chen Haoran, Han Qihang, Shen Jundong, Hua Chenghao, Zhu Kun, Zhao Yanying, Lin Chen, Yan Xueqing, Ma Wenjun. Diagnosis of focal spots at relativistic intensity utilizing coherent radiation from laser-driven flying electron sheets[J]. Matter and Radiation at Extremes, 2025, 10(2): 027202. doi: 10.1063/5.0255211

Citation:

Xu Shirui, Pan Zhuo, Gao Ying, Zhao Jiarui, Chen Shiyou, Mei Zhusong, Chen Xun, Peng Ziyang, Liu Xuan, Liang Yulan, Xu Tianqi, Song Tan, Wu Qingfan, Zhang Yujia, Liu Zhipeng, Zhang Zihao, Chen Haoran, Han Qihang, Shen Jundong, Hua Chenghao, Zhu Kun, Zhao Yanying, Lin Chen, Yan Xueqing, Ma Wenjun. Diagnosis of focal spots at relativistic intensity utilizing coherent radiation from laser-driven flying electron sheets[J]. Matter and Radiation at Extremes, 2025, 10(2): 027202. doi: 10.1063/5.0255211

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Diagnosis of focal spots at relativistic intensity utilizing coherent radiation from laser-driven flying electron sheets

doi: 10.1063/5.0255211

Xu Shirui^1
,,
Pan Zhuo^1
,,
Gao Ying^{1
,
,},
Zhao Jiarui^{1
,
,},
Chen Shiyou¹,
Mei Zhusong^1
,,
Chen Xun¹,
Peng Ziyang¹,
Liu Xuan¹,
Liang Yulan¹,
Xu Tianqi^1
,,
Song Tan¹,
Wu Qingfan¹,
Zhang Yujia^1
,,
Liu Zhipeng^1
,,
Zhang Zihao¹,
Chen Haoran¹,
Han Qihang^1
,,
Shen Jundong¹,
Hua Chenghao¹,
Zhu Kun¹,
Zhao Yanying¹,
Lin Chen^1
,,
Yan Xueqing^{1, 2, 3, 4
,},
Ma Wenjun^{1, 2, 3, 4
,
,
,}

1.
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
2.
Beijing Laser Acceleration Innovation Center, Huairou, Beijing 101400, China
3.
Guangdong Institute of Laser Plasma Accelerator Technology, Guangzhou 510080, China
4.
Collaborative Innovation Center of Extreme Optics, Shanxi University, Shanxi 030006, China

More Information

Author Bio:
Electronic mail: ying_gao@pku.edu.cn

Electronic mail: jrzhao@pku.edu.cn
Corresponding author: c)Author to whom correspondence should be addressed: wenjun.ma@pku.edu.cn
Received Date: 2024-12-27
Accepted Date: 2025-01-08

Available Online: 2025-03-01

Publish Date: 2025-03-01

Abstract

Abstract

Experimental validation of laser intensity is particularly important for the study of fundamental physics at extremely high intensities. However, reliable diagnosis of the focal spot and peak intensity faces huge challenges. In this work, we demonstrate for the first time that the coherent radiation farfield patterns from laser–foil interactions can serve as an in situ, real-time, and easy-to-implement diagnostic for an ultraintense laser focus. The laser-driven electron sheets, curved by the spatially varying laser field and leaving the targets at nearly the speed of light, produce doughnut-shaped patterns depending on the shapes of the focal spot and the absolute laser intensities. Assisted by particle-in-cell simulations, we can achieve measurements of the intensity and the focal spot, and provide immediate feedback to optimize the focal spots for extremely high intensity.

Conflict of Interest
The authors have no conflicts to disclose.
Author Contributions
Shirui Xu: Conceptualization (equal); Data curation (equal); Formal analysis (equal); Investigation (equal); Methodology (equal); Validation (equal); Visualization (equal); Writing – original draft (equal). Zhuo Pan: Investigation (equal). Ying Gao: Investigation (lead); Supervision (lead). Jiarui Zhao: Funding acquisition (lead); Investigation (equal); Supervision (lead). Shiyou Chen: Investigation (equal). Zhusong Mei: Investigation (equal). Xun Chen: Investigation (equal). Ziyang Peng: Investigation (equal). Xuan Liu: Investigation (equal). Yulan Liang: Investigation (equal). Tianqi Xu: Investigation (equal). Tan Song: Investigation (equal). Qingfan Wu: Investigation (equal). Yujia Zhang: Investigation (equal). Zhipeng Liu: Investigation (equal). Zihao Zhang: Investigation (equal). Haoran Chen: Investigation (equal). Qihang Han: Investigation (equal). Jundong Shen: Investigation (equal). Chenghao Hua: Investigation (equal). Kun Zhu: Investigation (equal). Yanying Zhao: Investigation (equal); Resources (lead). Chen Lin: Investigation (equal). Xueqing Yan: Investigation (equal); Resources (lead); Supervision (lead). Wenjun Ma: Conceptualization (equal); Funding acquisition (lead); Investigation (equal); Methodology (equal); Supervision (lead); Validation (equal); Writing – review & editing (equal).
The data that support the findings of this study are available from the corresponding author upon reasonable request.

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References(40)

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