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High-order harmonic generation in Ar and Ne with a 45fs intense laser field

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Abstract

Experimental results of high-order harmonic generation (HHG) in Ar and Ne gas driven with a 45fs Ti: sapphire laser are presented. The shortest-wavelength harmonic emission corresponding to the 91st order harmonic (8.63nm) is observed in argon. In neon, the harmonics up to order 131 (5.99nm) is also observed. The effects of gas density, laser intensity, free electron and the focusing geometry parameters of the laser beam on the process of harmonic generation are investigated. The direct experimental evidence that an increased electron density causes a degenerated harmonic radiation is obtained.

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Authors and Affiliations

  1. Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800, Shanghai, China

    Xu Zhizhan, Wang Yingsong, Zhai Kan, Li Xuexin, Liu Yaqing, Yang Xiaodong, Zhang Zhengquan, Li Ruxin & Zhang Wenqi

Authors
  1. Xu Zhizhan
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  2. Wang Yingsong
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  3. Zhai Kan
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  4. Li Xuexin
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  5. Liu Yaqing
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  6. Yang Xiaodong
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  7. Zhang Zhengquan
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  8. Li Ruxin
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  9. Zhang Wenqi
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Project supported by the Chinese Academy of Sciences and the High-Tech Project of China.

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Xu, Z., Wang, Y., Zhai, K. et al. High-order harmonic generation in Ar and Ne with a 45fs intense laser field. Sci. China Ser. A-Math. 42, 778–784 (1999). https://doi.org/10.1007/BF02878998

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  • DOI: https://doi.org/10.1007/BF02878998

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