Design of HUST-UED femtosecond laser delivery system

Haiming Zhang; Jian Wang; Zhengzheng Liu; Cheng-ying Tsai; Kehan Li; Chen Hu; Xiaofei Li; Kuanjun Fan

doi:10.1117/12.3000971

18 December 2023 Design of HUST-UED femtosecond laser delivery system

Haiming Zhang, Jian Wang, Zhengzheng Liu, Cheng-ying Tsai, Kehan Li, Chen Hu, Xiaofei Li, Kuanjun Fan

Proceedings Volume 12959, AOPC 2023: Laser Technology and Applications; and Optoelectronic Devices and Integration; 129590A (2023) https://doi.org/10.1117/12.3000971
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Ultrafast electron diffraction using photocathode microwave electron guns is a powerful tool for investigating ultrafast science. To improve the spatial and temporal resolution of diffraction, it is crucial to enhance the quality of the electron beam, particularly the initial quality of the electron beam emitted from the photocathode that is influenced by the driving laser. To meet the strict requirements, the performance parameters of the femtosecond laser transmission system play a significant role. In this paper, we analyze the impact of femtosecond laser system parameters on diffraction resolution and investigate the primary indicators of the femtosecond laser system. We conducted experiments to measure the primary parameters of the laser, including pointing stability, beam diameter, pulse width, and pulse energy. Based on the experimental results and considering the complexity of engineering implementation, we proposed an optical scheme for the femtosecond laser transmission path to satisfy the requirements of the ultrafast electron diffraction device for further improving the diffraction resolution. This research aims to provide valuable insights into optimizing the femtosecond laser system for ultrafast electron diffraction experiments.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Haiming Zhang, Jian Wang, Zhengzheng Liu, Cheng-ying Tsai, Kehan Li, Chen Hu, Xiaofei Li, and Kuanjun Fan "Design of HUST-UED femtosecond laser delivery system", Proc. SPIE 12959, AOPC 2023: Laser Technology and Applications; and Optoelectronic Devices and Integration, 129590A (18 December 2023); https://doi.org/10.1117/12.3000971

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