简介:Diode-pumpedpassivelyQ-switchedNd:GdVO4/Cr4+:YAGlaserswithasimpleflat-flatcavityweredemonstrated.Themaximumaverageoutputpowerat1.06μmwas1.25W.Thehighestpeakpowerandpulseenergywere7.56kWand75μJ,respectively,withthepulserepetitionrateof11.1kHzandpulsewidthof10nsattheincidentpumppowerof8W.
简介:Ultrashortpulsesweregeneratedinpassivelymode-lockedNd:YAGandNd:GdVO4laserspumpedbyapulsedlaserdiodewith10-Hzrepetitionrate.Stablemode-lockedpulsetrainswereproducedwiththepulsewidthof10ps.Theevolutionofthemode-lockedpulsewasobservedintheexperimentandwasdiscussedindetail.ComparingthepulseevolutionsofNd:YAGandNd:GdVO4lasers,wefoundthatthebuilduptimeofthesteady-statemode-lockingwithsemiconductorsaturableabsorbermirrors(SESAMs)wasrelevanttotheupper-statelifetimeandtheemissioncross-sectionofthegainmedium.
简介:Adiode-end-pumpedelectro-optic(EO)Q-switchedNd:YVO4laseroperatingatrepetitionrateof10kpps(pulsespersecond)wasreported.AblockofLa3Ga5SiO14(LGS)singlecrystalwasusedasaQ-switchandthedriverwasametaloxidesemiconductorfieldeffecttransistor(MOS-FET)pulserofhighrepetitionrateandhighvoltage.Atcontinuouswave(CW)operation,theslopeefficiencyofthelaserwas46%,andmaximumoptical-to-opticalefficiencywas38.5%.Usinganoutputcouplerwithtransmissionof70%,a10-kppsQ-switchedpulsetrainwith0.4-mJmonopulseenergyand8.2-nspulsewidthwasachieved,theopticalconversionefficiencywasaround15%,andthebeamqualityM2factorwaslessthan1.2.