A LIDAR technique to measure the filament length generated by a high-peak power femtosecond laser pulse in air

被引：38

作者：

Iwasaki, A ^{[1
]}

Aközbek, N

Ferland, B

Luo, Q

Roy, G

Bowden, CM

Chin, SL

机构：

[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1K 7P4, Canada

[2] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1K 7P4, Canada

[3] Time Domain Corp, Huntsville, AL 35806 USA

[4] USA, Aviat & Missile Command, AMRDEC, AMSAM RD WS ST, Redstone Arsenal, AL 35898 USA

[5] Def Res & Dev Ctr Valcartier, Sensor Performance Predict Grp, Val Belair, PQ, Canada

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2003年 / 76卷 / 03期

关键词：

D O I：

10.1007/s00340-002-1077-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a new method for measuring the length of a femtosecond laser pulse induced filament in air using a LIDAR (LIght Detection And Ranging) technique. The LIDAR involves a detector with a fast response time. The back-scattered multiphoton induced fluorescence from nitrogen molecules excited inside the filament is measured, from which the length of the filament can be determined. We find good agreement between the measured filament length and the length estimated from burn patterns on paper. In addition, good qualitative agreement between the experimental measurement and numerical simulations is obtained for the signal features of the filament. We propose that this new method can be used to quantitatively determine filamentation at longer distances.

引用

页码：231 / 236

页数：6

共 27 条

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