The refocusing behaviour of a focused femtosecond laser pulse in fused silica

Refocusing behaviour was observed when a single femtosecond laser pulse was focused into fused silica. A theoretical model based on the nonlinear Schrodinger equation is given, from which a semianalytical solution Is obtained and using which the experimental results are interpreted qualitatively. A clear physical insight into the formation of refocusing behaviour and propagation in ionizing media is provided.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000182215700006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701OpticsSCI(E)EI15ARTICLE2102-107