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Lasing action in water vapor induced by ultrashort laser filamentation

  • Shuai Yuan
  • , Tiejun Wang
  • , Yoshiaki Teranishi
  • , Aravindan Sridharan
  • , Sheng Hsien Lin
  • , Heping Zeng
  • , See Leang Chin
  • Université Laval
  • East China Normal University
  • CAS - Shanghai Institute of Optics and Fine Mechanics
  • National Yang Ming Chiao Tung University
  • National Tsing Hua University
  • Academia Sinica - Institute of Atomic and Molecular Sciences
  • University of Shanghai for Science and Technology

科研成果: 期刊稿件文章同行评审

摘要

The water vapor fluorescence in air from filaments generated by intense ultrashort Ti:sapphire laser pulses is experimentally studied. The backscattered fluorescence from OH shows an exponential increase with increasing filament length, indicating amplified spontaneous emission. By measuring the intensity inside the filament and the fluorescence intensity of OH, a high degree of nonlinearity is obtained, indicating a highly nonlinear field dissociation of H2O molecule.

源语言英语
文章编号224102
期刊Applied Physics Letters
102
22
DOI
出版状态已出版 - 3 6月 2013
已对外发布

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