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首页> 中文期刊> 《中国科学》 >Phase-matched high-order harmonics by interaction of Ar atoms with high-repetition-rate low-energy femtosecond laser pulses

Phase-matched high-order harmonics by interaction of Ar atoms with high-repetition-rate low-energy femtosecond laser pulses

         
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摘要

Phase-matched high-order harmonic generation in Ar gas-filled cell was investigated experimentally. We obtained phase-matched 27th order harmonic driven by a commercially available solid-state femtosecond laser system at 0.55 m J/pulse energy level and 1 kHz repetition rate. To our knowledge, this is the lowest driving laser energy used to obtain phase-matched 27th order harmonic in a static gas cell. High-order harmonic generation at different gas density was studied systematically. Spectral blueshift and broadening of high harmonics under different pressure were analyzed. We found that the source size and spatial distribution of high-order harmonics are quite different under the phase-matching condition from those of the phase-mismatching case.

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  • 来源
    《中国科学》 |2004年第4期|P.492-501|共10页
  • 作者

    XIE; Xinhua; ZENG; Zhinan; LI; Ruxin; CHEN; Shu; LU; Haihe;

  • 作者单位

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  • 原文格式 PDF
  • 正文语种 CHI
  • 中图分类 自然科学总论;
  • 关键词

    high-order; harmonic; generation,; phase; matching,; spectral; characteristic,; spatial; distribution.;

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