摘要
Thebandwidthandthedurationofincidentpulsedbeamareprovedtoplayimportantrolesinmodifyingthenonlinearimageofamplitude-typescatterer.Itisfoundthattheinitiallypositivechirp-typebandwidthcansuppressthenonlinearimage,whilethenegativeonecanenhanceit,andthatbotheffectsareinverselyproportionaltotheincidentpulseduration.Numericalsimulationsfurtherdemonstratethatthelocationofnonlinearimageisattheconjugateplaneofthescattererandthat,fornegativelypre-chirpedpulsedbeam,thenonlinearimagepeakintensitycanbehigherthanthatinthecorrespondingmonochromaticcaseundercertainconditions.Moreovertheeffectofgroupvelocitydispersiononnonlinearimageisfoundtobesimilartothatofchirp-typebandwidth.
出版日期
2010年11月21日（中国期刊网平台首次上网日期，不代表论文的发表时间）
