1.
Phys Rev E Stat Nonlin Soft Matter Phys
; 73(3 Pt 2): 036404, 2006 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-16605665
RESUMO
Plasma waveguides generated by focusing a moderate intensity laser into neutral gas with an axicon lens can be unstable to the generation of axial modulations in the channel parameters. A model is proposed in which the modulations are due to the nonlinear coupling between the axicon field and a scattered mode in the evolving channel. Good agreement is found with experimental measurements of these modulations.