Open AccessThird harmonic generation in plasma channels in air induced by intense femtosecond laser pulses
Author(s) -
Zuoqiang Hao,
Jie Zhang,
Zhe Zhang,
Xi Ting-Ting,
Zheng Zhang,
Xiaohui Yuan,
Zhaohua Wang
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.3173
Subject(s) - femtosecond , plasma , laser , atomic physics , materials science , plasma channel , high harmonic generation , conical surface , optics , harmonic , physics , quantum mechanics , composite material
Strong third-order harmonic (TH) emission is observed from long plasma channels formed when intense femtosecond laser pulses propagate in air. The conversion efficiency between the fundamental wave and the TH emission is roughly constant over the length of the plasma channels. The divergence angle of the TH emission in the conical emission of the plasma channels is also investigated, which is in good agreement with calculations.