简介：一个新奇的黑磷(BP)答案可饱和的吸收器(SA)被liquid-phase-exfoliated方法制作并且成功地使用了为消极地切换Q(QS)Nd:YVO4激光。与传统的稳固的SA相比，BP答案SA拥有更优秀的光透明性和更高的损坏抵抗。最短的脉搏持续时间和最高平均的产量力量被测量分别地是119ns和1.23W。就我们的知识而言，他们俩是在QS之中的最好的结果固态有基于BP的吸收器的激光到目前为止。重复率在533.2～722kHz的范围。结果显示BP答案SA的潜在的申请进高力量固态脉搏激光。

简介：它不是DTM赛车，最少某种程度上不是。这是奔驰C63AMGCoupeBlackSeries，最后两个字尤其重要，因为那是最疯最强AMG型号才有资格背负的头衔。截至目前，有此称号的型号仅有三个，衍生这个新型号的CLK63Black即属其中之一。

简介：Theopticalpropertiesofafive-levelatomicsystemcomposedofaA-typefour-levelatomicandatripodfour-levelatomicsystemsareinvestigated.Itisfoundthatthebehaviorsofelectromagneticallyinducedtransparency(EIT)andgroupvelocitycanbecontrolledbychoosingappropriateparameterswiththeinteractingdarkresonances.Inparticular,whenallthefieldsareonresonance,theslowlightatthesymmetrictransparencywindowswithamuchbroaderEITwidthisobtainedbytuningtheintensityofthecouplingfieldincomparisonwithitssub-system,whichprovidespotentialapplicationsinquantumstorageandretrievaloflight.

简介：Theeffectsofvacuum-inducedcoherence(VIC)onthepropertiesoftheabsorptionandgainoftheprobefieldinanequispacedthree-levelladderatomicsystemareinvestigated.Itisfoundthatlasingwithoutinversion(LWI)isremarkablyenhancedduetotheeffectofVICinthecaseofthesmallincoherentpumprate.

简介：Weproduceamaximum1.45Wlaseroutputat1064nmusinganeodymium-dopedsilicateglassfiberthathasarectangularcorewithdimensionsof~6.3μm×31.5μm.Themeasureddivergenceanglesoftheoutputlaserintwodimensionsare3.22°and1.76°,respectively.Theoutputpowerisstableandlimitedonlybytheavailablepumppower.

简介：Adiode-end-pumpedelectro-optic(EO)Q-switchedgreenlaseroperatingattherepetitionrateof20kHzisreported.AblockofLa_3Ga_5SiO_(14)(LGS)singlecrystalisusedasaQ-switchandthetypeⅠphase-matchingLiB_3O_5(LBO)isusedasthenonlinearcrystalinthesecondharmonicgeneration.The2.3-Waveragepowerof532-nmgreenlaserisobtainedattherepetitionrateof20kHzwiththepulsewidthasshortas10ns.Whentheoutputpowerisabout1.5W,themeasuredpowerfluctuationislessthan1.4%(root-mean-square,RMS)withthebeamqualityfactorofM~2<2inbothorthogonaldirections.

简介：Thebehaviorofpopulationtransferinanexcited-doubletfour-levelsystemdrivenbylinearpolarizedfew-cycleultrashortlaserpulsesisinvestigatednumerically.Itisshownthatalmostcompletepopulationtransfercanbeachievedevenwhentheadiabaticcriterionisnotfulfilled.Moreover,therobustnessofthisschemeintermsoftheRabifrequenciesandchirpratesofthepulsesisexplored.