Measurement of filament length generated by an intense femtosecond laser pulse using electromagnetic radiation detection

被引：24
|
作者：
Hosseini, SA [1 ]
Ferland, B [1 ]
Chin, SL [1 ]
机构：
[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1K 7P4, Canada
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2003年 / 76卷 / 05期
关键词：
D O I：
10.1007/s00340-003-1132-8
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a new method to measure the length of a filament induced by the propagation of intense femtosecond laser pulses in air. We used an antenna to detect electromagnetic pulses radiated from multipole moments inside the filament oscillating at the plasma frequency. The results are compared with the values detected from the backscattered fluorescence induced by multiphoton ionization of nitrogen molecules excited inside the filament. The values are found to be in good agreement.
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页码：583 / 586
页数：4
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