摘要
Usingastrongnonlinearsaturationabsorptioneffectisonetechniqueforbreakingthroughthediffractionlimit.Inthistechnique,formationofadynamicandreversibleopticalpinholechannelandtransientsuperresolutioniscritical.Inthiswork,apump–probetransientdetectionandobservation–experimentalsetupisconstructedtoexploretheformationprocessdirectly.AGe2Sb2Te5thinfilmwithstrongnonlinearsaturationabsorptionisinvestigated.Thedynamicevolutionoftheopticalpinholechannelisdetectedandimaged,andthetransientsuperresolutionspotisdirectlycapturedexperimentally.Resultsverifythatthesuperresolutioneffectoriginatesfromthegenerationofanopticalpinholechannelandthattheformationoftheopticalpinholechannelisdynamicandreversible.Agoodmethodisprovidedfordirectdetectionandobservationofthetransientprocessofthesuperresolutioneffectofnonlinearthinfilms.
出版日期
2015年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
