中国物理B ›› 2010, Vol. 19 ›› Issue (11): 113204-113206.doi: 10.1088/1674-1056/19/11/113204

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Multi-photon resonance enhanced super high-order harmonic generation

林正喆1, 宁西京1, 庄军2   

  1. (1)Applied Ion Beam Physics Laboratory, Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China; (2)Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
  • 收稿日期:2010-02-12 修回日期:2010-03-17 出版日期:2010-11-15 发布日期:2010-11-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10574030).

Multi-photon resonance enhanced super high-order harmonic generation

Lin Zheng-Zhe(林正喆)a), Zhuang Jun(庄军)b), and Ning Xi-Jing(宁西京)a)   

  1. a Applied Ion Beam Physics Laboratory, Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China; b Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
  • Received:2010-02-12 Revised:2010-03-17 Online:2010-11-15 Published:2010-11-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10574030).

摘要: This paper proposes highly charged ions pumped by intense laser to produce very high order harmonics. Numerical simulations and full quantum theory of Ne9+ ions driven by laser pulses at 1064 nm in the power range of 109 W/cm2 ~ 1015 W/cm2 show that the emission spectrum corresponds to the electronic transitions from the excited states to the ground state, which is very different from the spectrum of general high-order harmonic generation. In such situation, harmonic order as high as 1000 can be obtained without producing lower order harmonics and the energy conversion efficiency is close to general high order harmonic generation of hydrogen atom in the same laser field.

Abstract: This paper proposes highly charged ions pumped by intense laser to produce very high order harmonics. Numerical simulations and full quantum theory of Ne9+ ions driven by laser pulses at 1064 nm in the power range of 109 W/cm2 ~ 1015 W/cm2 show that the emission spectrum corresponds to the electronic transitions from the excited states to the ground state, which is very different from the spectrum of general high-order harmonic generation. In such situation, harmonic order as high as 1000 can be obtained without producing lower order harmonics and the energy conversion efficiency is close to general high order harmonic generation of hydrogen atom in the same laser field.

Key words: multi-photon excitation, high-order harmonic generation

中图分类号:  (Multiphoton ionization and excitation to highly excited states)

  • 32.80.Rm
42.79.Nv (Optical frequency converters)