Dr. Peng Gu Profile

Dr. Peng Gu

at AVIC Manufacturing Technology Institute

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Proceedings Article | 26 April 2019 Paper

High order harmonics in modulated slab waveguide

Peng Gu, Yizhuo Zhang, He Hao, Zhuo Li

Proceedings Volume 11034, 110340U (2019) https://doi.org/10.1117/12.2525002

KEYWORDS: Femtosecond phenomena, Extreme ultraviolet

Read Abstract +

High order harmonics is generated in a modulated slab waveguide which is filled with helium when a femtosecond laser is focused into this kind of waveguide. The modulated slab waveguide is used to implement quasi-phase matching of high order harmonics so that an obvious increase of the high harmonics yield at wavelengths close to the cutoff region was observed. High order harmonics generated in modulated waveguides with a period of 0.8mm and a period of 0.5mm respectively were compared. The results show that the shorter the period of the modulated slab waveguide is, the higher order high harmonics with phase mismatch we can compensate.

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