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Plasma effect on the phase matching of high harmonic generation

Plasma effect on the phase matching of high harmonic generation
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摘要 By optimizing the phase matching condition of high harmonic generation （HHG） from a supersonic neon gas jet, the enhanced HHG in the region of 60-70 eV has been selected. Three-dimensional numerical calculation shows that plasma plays a significant role in the phase matching process of HHG in a supersonic gas jet with short medium length. Due to plasma formation, the harmonic emission decays as the laser intensity reaches over 3.5 ~ 1014 W/cm^2. The plasma induces the broadening and blue shift of the HHG spectra, which provides a method for fine-tuning the harmonic wavelength. By optimizing the phase matching condition of high harmonic generation （HHG） from a supersonic neon gas jet, the enhanced HHG in the region of 60-70 eV has been selected. Three-dimensional numerical calculation shows that plasma plays a significant role in the phase matching process of HHG in a supersonic gas jet with short medium length. Due to plasma formation, the harmonic emission decays as the laser intensity reaches over 3.5 ~ 1014 W/cm^2. The plasma induces the broadening and blue shift of the HHG spectra, which provides a method for fine-tuning the harmonic wavelength.
作者 芦慧 刘灿东 赵诗童 刘鹏
机构地区 Shanghai Institute of Optics and Fine Mechanics
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2011年第1期75-78,共4页 中国光学快报（英文版）
基金 supported by the Chinese Academy of Sciences,the Chinese Ministry of Science and Technology,the National Natural Science Foundation of China(Nos.10734080,10523003,60921004,and 60978012) the National "973" Program of China (No.2006CB806000) the Shanghai Commission of Science and Technology(Nos.06DZ22015 and 07pj14091)
关键词 Harmonic analysis NEON Phase matching PLASMAS Supersonic aerodynamics Harmonic analysis Neon Phase matching Plasmas Supersonic aerodynamics
分类号 O534 [理学—等离子体物理]
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Chinese Optics Letters
2011年 第1期

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