Energy density characterization of complex ultrashort laser pulses

被引：0
|
作者：
Lotti, Antonio [1 ,2 ,3 ,4 ]
Couairon, Arnaud [3 ,4 ]
Faccio, Daniele [1 ,2 ,4 ]
Di Trapani, Paolo [1 ,2 ,4 ]
机构：
[1] Univ Insubria, CNISM, Via Valleggio 11, I-22100 Como, Italy
[2] Univ Insubria, Dept Phys & Math, I-22100 Como, Italy
[3] Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France
[4] VINO, I-22100 Como, Italy
来源：
NONLINEAR OPTICS AND APPLICATIONS IV | 2010年 / 7728卷
关键词：
energy flux; ultrashort laser pulse; pulse characterization; phase retrieval; PHASE RETRIEVAL; SPATIOTEMPORAL AMPLITUDE; ANGULAR-MOMENTUM; FILAMENTATION;
D O I：
10.1117/12.854551
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We introduce the concept of energy density flux as a characterization tool for the propagation of ultrashort laser pulses with spatio-temporal coupling. This energy density flux is calculated in the local frame moving at the velocity of the envelope of the wave packet under examination, and it can also be extended to the case of nonlinear propagation. We perform a detailed numerical study of the energy density flux in the particular case of conical waves. We also experimentally characterize the energy density flux for the cases of Bessel-X pulse in linear propagation and complex ultrashort pulses generated by filamentation in a nonlinear Kerr medium.
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页数：12
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