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26 April 2019 High order harmonics in modulated slab waveguide
Peng Gu, Yizhuo Zhang, He Hao, Zhuo Li
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Proceedings Volume 11034, Short-pulse High-energy Lasers and Ultrafast Optical Technologies; 110340U (2019) https://doi.org/10.1117/12.2525002
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic
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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Peng Gu, Yizhuo Zhang, He Hao, and Zhuo Li "High order harmonics in modulated slab waveguide", Proc. SPIE 11034, Short-pulse High-energy Lasers and Ultrafast Optical Technologies, 110340U (26 April 2019); https://doi.org/10.1117/12.2525002
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KEYWORDS
Femtosecond phenomena
Extreme ultraviolet
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