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arXiv · 2405.06894

Dual-grating single-shot pump-probe technique

Tianchen Yu·Junyi Yang·Wenfa Zhou·Zhongguo Li·Xingzhi Wu·Yu Fang·Yong Yang·Yinglin Song
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Abstract

A simple and effective single-shot pump-probe technique is reported for studying the ultrafast dynamic processes in various materials. Using only two commercial gratings, a large time window of ~ 95.58 ps is spatially encoded in a single probe pulse, and single-shot time-resolved measurements are implemented. This time window exceeds the maximum reported values for single-shot pump-probe techniques using the echelon or angle beam encoding strategy. The phase difference problem in the echelon encoding strategies is also eliminated and a customized echelon is not needed in this technique. The ultrafast dynamic processes of ZnSe and indolium squaraine at a wavelength of 650 nm were investigated using this technique.

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Tianchen Yu, Junyi Yang, Wenfa Zhou, Zhongguo Li, Xingzhi Wu, Yu Fang, Yong Yang, Yinglin Song. 2024-05-11. Dual-grating single-shot pump-probe technique. https://arxiv.org/abs/2405.06894

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