Design of random microlens arrays with large scattering angles

Song, Huiying; Huang, Long; Li, Feng; Zhao, Shaoqing; Liu, Yuqing; Liu, Yueting; Zhai, Ruizhan; Dong, Yongjun; Feng, Zexin; Liu, Hua

doi:10.1016/j.optlastec.2024.112176

Optics & Laser Technology

2025

DOI: 10.1016/j.optlastec.2024.112176

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Design of random microlens arrays with large scattering angles

Huiying Song,

Long Huang,

Feng Li

et al.

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Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun

Liu,

Jia,

et al. 2024

Photonics

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In a high-brightness photocathode gun, the non-uniformity in both the transverse distribution of the photocathode drive laser and the quantum efficiency (QE) map can lead to degradation in electron beam quality. This study explores an adaptive transverse laser shaping technique and its application to improve the uniformity of the electrons emitted from the photocathode. Utilizing a spatial light modulator (SLM) with a feedback algorithm, we effectively control the drive laser distribution and achieve single-shot QE map measurement and QE compensation. The experiments conducted on the DC-SRF-II gun demonstrate a rapid and efficient QE measurement process, as well as a notable improvement in electron beam uniformity. Our study offers a promising approach for improving beam quality in accelerator applications that demand high-brightness electron sources.

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Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun

Liu,

Jia,

et al. 2024

Photonics

View full text Add to dashboard Cite

show abstract

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Design of random microlens arrays with large scattering angles

Cited by 1 publication

References 24 publications

Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun

Adaptive Transverse Laser Shaping and Its Application in a Photocathode Gun

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