Study of laser induced plasma grating dynamics in gases

被引：17
|
作者：
Jarnac, A. [1 ]
Durand, M. [1 ,2 ]
Liu, Y. [1 ]
Prade, B. [1 ]
Houard, A. [1 ]
Tikhonchuk, V. [3 ]
Mysyrowicz, A. [1 ]
机构：
[1] CNRS, Ecole Polytech, ENSTA ParisTech, Lab Opt Appl, F-91762 Palaiseau, France
[2] Univ Cent Florida, CREOL Coll Opt & Photon, Townes Laser Inst, Orlando, FL 32816 USA
[3] Univ Bordeaux, CNRS, CEA, CELIA Ctr Lasers Intenses & Applicat,UMR5107, F-33405 Talence, France
来源：
OPTICS COMMUNICATIONS | 2014年 / 312卷
关键词：
Non-linear optics; Filamentation Plasma grating; Ambipolar diffusion; Recombination; FEMTOSECOND FILAMENTATION; AIR FILAMENTS; PULSE; RECOMBINATION; GENERATION; IONIZATION; DISCHARGES; CHANNEL;
D O I：
10.1016/j.optcom.2013.07.082
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The relaxation of a plasma grating resulting from the interference of two crossing laser filaments in molecular and atomic gases is studied experimentally. Dissipation of the grating fringes is dominated by ambipolar diffusion in atomic gases and by a combination of ambipolar diffusion and collision-assisted free electron recombination in molecular gases. A theoretical model of the grating evolution is developed and compared to experimental results. Good agreement with simulations allows extracting plasma properties such as electron density, diffusion and recombination coefficients in Ne, Ar, Kr, Xe, N-2, O-2, CO2 and air at atmospheric pressure. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：35 / 42
页数：8
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