简介：Wereportonthedesignandperformanceofafiberlasersystemwithadaptiveacousto-opticmacropulsecontrolforanovelphotocathodelaserdriverwith3Dellipsoidalpulseshaping.Thelasersystemincorporatesathreestagefiberamplifierwithanintegratedacousto-opticalmodulator.Adigitalelectroniccontrolsystemwithfeedbackcombinesthefunctionsofthearbitrarymicropulseselectionandmodulationresultinginmacropulseenvelopeprofiling.Asabenefit,anarrowtemporaltransparencywindowofthemodulator,comparabletoalaserpulserepetitionperiod,effectivelyimprovestemporalcontrast.Inexperiments,wedemonstratedrectangularlaserpulsetrainprofilingattheoutputofathree-cascadeYb-dopedfiberamplifier.
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