Nonlinear images of scatterers in chirped pulsed laser beams

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摘要 Thebandwidthandthedurationofincidentpulsedbeamareprovedtoplayimportantrolesinmodifyingthenonlinearimageofamplitude-typescatterer.Itisfoundthattheinitiallypositivechirp-typebandwidthcansuppressthenonlinearimage,whilethenegativeonecanenhanceit,andthatbotheffectsareinverselyproportionaltotheincidentpulseduration.Numericalsimulationsfurtherdemonstratethatthelocationofnonlinearimageisattheconjugateplaneofthescattererandthat,fornegativelypre-chirpedpulsedbeam,thenonlinearimagepeakintensitycanbehigherthanthatinthecorrespondingmonochromaticcaseundercertainconditions.Moreovertheeffectofgroupvelocitydispersiononnonlinearimageisfoundtobesimilartothatofchirp-typebandwidth.
机构地区 不详
出处 《中国物理B:英文版》 2010年11期
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)
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