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1、High-powerin-bandpumpedEr:YAGlaserat1617nmJ.W.Kim,D.Y.Shen,J.K.Sahu,andW.A.ClarksonOptoelectronicsResearchCenter,UniversityofSouthampton,Southampton,SO171BJ,UKjwk@orc.soton.ac.ukAbstract:High-powerroom-temperatureoperationofanEr:YAGlaserat1617nmin-bandpumpedbyacladding
2、-pumpedEr,Ybfiberlaserat1532nmisreported.TheEr:YAGlaseryielded31Wofcontinuous-waveoutput2inabeamwithM≈2.2for72Wofincidentpumppower.Thethresholdpumppowerwas4.1Wandtheslopeefficiencywithrespecttoincidentpumppowerwas~47%.Theinfluenceoferbiumdopinglevelandresonatordesignon
3、laserperformanceisdiscussed,andtheprospectsforfurtherincreaseinoutputpowerandimprovementinlasingefficiencyareconsidered.©2008OpticalSocietyofAmericaOCIScodes:(140.0140)Lasersandlaseroptics;(140.3070)Infraredandfar-infraredlasers;(140.3500)Lasers,erbium;(140.3510)Lasers
4、,fiber;(140.3580)Lasers,solid-state.Referencesandlinks1.D.Y.Shen,J.K.Sahu,andW.A.Clarkson,“Highlyefficientin-bandpumpedEr:YAGlaserswith>60Wofoutputat1645nm,”Opt.Lett31,754-756(2006).2.D.Y.Shen,J.K.Sahu,andW.A.Clarkson,“Electro-opticallyQ-switchedEr:YAGlaserin-bandpumpe
5、dbyanErYbfiberlaser,”AdvancedSolid-StatePhotonics2006NevadaWD4(2006).3.Y.E.Young,S.D.Setzler,K.J.Snell,P.A.Budni,T.M.Pollak,andE.P.Chicklis,“Efficient1645nmEr:YAGlaser,”Opt.Lett.29,1075-1077(2004).4.S.D.Setzler,M.P.Francis,Y.E.Young,J.R.Konves,andE.P.Chicklis,“Resonant
6、lypumpedeyesafeerbiumlasers,”IEEEJ.Sel.Top.QuantumElectron.11,645-657(2005).5.K.Spariosu,V.Leyva,R.A.Reeder,andM.J.Klotz,“EfficientEr:YAGlaseroperatingat1645and1617nm,”IEEEJ.QuantumElectron.42,182-186(2006).6.V.LeyvaandK.Spariosu,“Powerscalingof1617-nmEr:YAGlaseroperat
7、ionusinganarrowbandwidthoutputcoupler,”Proc.SPIE,6100,61000C(2006).7.D.Garbuzov,I.Kudryashov,andM.Dubinskii,“110W(0.9J)pulsedpowerfromresonantlydiode-laser-pumped1.6μmEr:YAGlaser,”Appl.Phys.Lett.87,121101-121103(2005).8.M.Dubinskii,N.T.Gabrielyan,G.A.Newburgh,andL.D.Me
8、rkle,“Resonantlydiode-pumpedEr:YAGcryo-laserat1618nm,”TechnicalDigestinAdvancedSolid-StatePhotonics2007,Post-deadline
