简介:FourkindsofY2O3stabilizedZrO2(YSZ)thinfilmswithdifferentY2O3contents(from0to12mol%)aredepositedonBK7glasssubstratesbyelectron-beamevaporationmethod.TheeffectsofdifferentY2O3dopantcontentsonresidualstress,structure,andopticalpropertiesofZrO2thinfilmsareinvestigated.TheresultsshowthatresidualstressinYSZthinfilmsvariesfromtensiletocompressivewiththeincreaseofY2O3molarcontent.TheadditionofY2O3isbeneficialtothecrystallizationofYSZthinfilmandtransformationfromamorphoustohightemperaturephase,andtherefractiveindexdecreaseswiththeincreaseofY2O3molarcontent.Moreover,thevariationsofresidualstressandtheshiftsofrefractiveindexcorrespondtotheevolutionofstructuresinducedbytheadditionofY2O3.
简介:Wereportonthecontinuous-wave(CW)andpassiveQ-switchingperformanceofaminiatureYb:Y3Ga5O12crystallaserendpumpedbya935-nmdiodelaser.AmaximumCWoutputpowerof12.03Wisproducedwithanoptical-to-opticalefficiencyof54.4%,whiletheslopeefficiencyis63%.InthepassivelyQ-switchedoperationachievedwithaCr4+:YAGsaturableabsorber,anaverageoutputpowerof2.12Wat1025.2nmisgeneratedwithaslopeefficiencyof46%atapulserepetitionrateof5.0kHz.Thepulse’senergy,duration,andpeakpowerare424μJ,2.3ns,and184.3kW,respectively.
简介:对激光辐照PV型的Hg1-xCdxTe单元探测器的响应特性进行了研究,建立了材料内部光生电动势变化的数学分析模型。计算了不同光源辐照3类组分不同的Hg1-xCdxTe探测单元的输出特性,并对温度波动影响进行了分析。结果表明:在光敏面积恒定时,x值越大探测器的完全饱和电压越大,即探测器的响应度Hg0.627Cd0.373Te〉Hg0.698Cd0.302Te〉Hg0.819Cd0.181Te;x值越小,探测器受温度波动的影响越小。
简介:辐射度定标是时间调制型FTIR数据处理中非常关键的一个环节,定标的好坏直接影响着其在应用中性能的优劣。根据光谱仪响应函数(线性或非线性)的不同,辐射度定标方法可分为线性定标和非线性定标;根据定标中采用的点数的不同可分为两点定标和多点定标。首先用MATLAB对光谱仪采集的数据进行线性度分析与仿真,然后用C++编程分别实现线性定标和非线性定标。实验结果为两点法的误差为0.1118,抛物线法的误差为0.1684,四点线性的误差为0.0599。结果表明多点线性的定标方法效果最好。采用四点线性的方法进行定标将大大提升光谱的准确度,为后面的光谱识别工作打好基础。