【摘 要】
：
We experimentally observe two independent terahertz sources with different peak frequencies emitted from a femtosecond laser pulse induced air filament when
【机 构】
：
Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy,Shangh
【出 处】
：
SFPUP 2014 International Workshop on Strong Field Physics an
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We experimentally observe two independent terahertz sources with different peak frequencies emitted from a femtosecond laser pulse induced air filament when the filament splits into two sub-filaments.The frequency of terahertz waves from the trailing sub-filament is higher than that from the leading sub-filament.
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