简介：Wereporttheinvestigationontheperformanceofanamplificationassisteddifferencefrequencygeneration(AA-DFG)systemdrivenbypulsedpumpandcontinuous-waveprimarysignallasers.AmonolithictandemlithiumniobatesuperlatticewasemployedasthenonlinearcrystalwithauniformgratingsectionfortheDFGprocess,followedbyachirpsectionfortheopticalparametricamplificationprocess.Theimpactsofpumppulseshape,primarysignalpower,inputbeamdiameter,andcrystalstructureonthepump-to-idlerconversionefficiencyoftheAA-DFGsystemwerecomprehensivelystudiedbynumericallysolvingthecoupledwaveequations.Itisconcludedthatsquarepumppulseandhighprimarysignalpowerarebeneficialtohighpump-to-idlerconversionefficiency.Inaddition,tighterinputbeamfocusandsmallerDFGlengthproportioncouldredeemthereductioninconversionefficiencyresultingfromwideracceptancebandwidthsfortheinputlasers.Webelievethatsuchsystemscombiningthemeritsofhighstabilityinheritedfromcavity-freeconfigurationandhighefficiencyattributedfromthecascadednonlinearconversionshouldbeofgreatinteresttoawidecommunity,especiallywhenthepulseshapingtechniqueisincorporated.