Analysis of spatio-temporal coupling aberrations introduced by achromatic lens assembly tuning errors in ultrafast and ultra intense laser systems

Xu Haotian; Wang Xiao; Li Wei; Sun Bin; Wang Jimin; Wei Pengyu; Mu Jie; Li Gang; Zuo Yanlei

doi:10.11884/HPLPB202537.250002

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Xu Haotian, Wang Xiao, Li Wei, et al. Analysis of spatio-temporal coupling aberrations introduced by achromatic lens assembly tuning errors in ultrafast and ultra intense laser systems[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250002

Citation:

Xu Haotian, Wang Xiao, Li Wei, et al. Analysis of spatio-temporal coupling aberrations introduced by achromatic lens assembly tuning errors in ultrafast and ultra intense laser systems[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250002

Citation:

Xu Haotian, Wang Xiao, Li Wei, et al. Analysis of spatio-temporal coupling aberrations introduced by achromatic lens assembly tuning errors in ultrafast and ultra intense laser systems[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250002

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Analysis of spatio-temporal coupling aberrations introduced by achromatic lens assembly tuning errors in ultrafast and ultra intense laser systems

doi: 10.11884/HPLPB202537.250002

Xu Haotian^{1, 2
,},
Wang Xiao^{1
,
,},
Li Wei⁴,
Sun Bin³,
Wang Jimin^{1, 2},
Wei Pengyu^{1, 2, 5},
Mu Jie¹,
Li Gang¹,
Zuo Yanlei¹

1.
National Key Laboratory of Plasma Physics, Laser Fusion Research Center, CAEP, Mianyang 621900, China
2.
Graduate School of China Academy of Engineering Physics, Beijing 100088, China
3.
School of Physics and Astronomy, China West Normal University, Nanchong 637002, China
4.
Institute of Fluid Physics, CAEP, Mianyang 621900, China
5.
Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China

Received Date: 2025-01-03
Accepted Date: 2025-05-26
Rev Recd Date: 2025-05-17

Available Online: 2025-05-27

Abstract

Abstract

In ultrafast high-power laser systems, achromatic lens groups are typically used to replace standard beam expanders to eliminate spatio-temporal coupling (STC) distortions caused by chromatic aberrations. However, alignment errors in these achromatic lens groups can introduce new STC distortions, reducing far-field power density and compromising the desired correction. This paper quantitatively analyzes the STC distortions induced by three types of alignment errors using a broad-spectrum pulse laser transmission model and a thick lens equivalent phase screen model. The impact of these errors on far-field focusing power density is evaluated, and permissible error ranges for each type are established.
- ultrafast lasers,
- achromatic lenses,
- spatio-temporal coupling,
- misalignments,
- peak power density

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References(30)

References

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