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令G是简单图.记(∠)(G)为图G的规范拉普拉斯矩阵,其特征值称为图的规范拉普拉斯特征值.[Adv.Math.(China),2017,46(6):848-856]给......
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A novel method of direct synthesis of CeO2 nanoparticles onto multi-walled carbon nanotubes (MWNTs) was developed with a......
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In this work, some measurements have been performed on the natural neutron spectrum by a multispeed neutron spectrometer......
测出了氟锆酸盐玻璃(ZBLAN)中Ho3 离子的激发光谱和发射光谱，算出其振子强度，辐射跃迁几率和受激发射截面.详细地研究了这种基质中离......
研究了Kerr透镜锁模钛宝石激光器中腔内群色散改变时脉冲的动态特性。实验研究了腔内群色散改变时输出脉冲的频谱、中心波长以及脉......
开发了神光III主机装置上的背向散射诊断技术。采用非球面金属镜配空间滤波器的方式将倍频晶体返回的杂散光滤除，采用矩形小孔将楔......
针对太阳能利用技术中, 动态和准确模拟太阳光照的问题, 研制了一种基于轨道参数的全天候室内太阳模拟装置。根据静态的太阳轨迹数......
根据部分相干光理论, 得到了光纤环光谱传递函数。 并分析了光纤环光学长度、 耦合输出系数、 损耗对光纤环光谱传递函数的作用。......
研究了在恒温变电流与恒电流变温下蓝光单色芯片的电致发光光谱特征,以及在这两种模式下蓝光芯片与荧光陶瓷封装形成的白光LED的发......
首次报道了掺铒铌酸锂晶体的频率上转换发光效应和该晶体的全吸收谱、绿光发射上能级4Ｓ3/2态的荧光寿命，以及其与温度变化的关系等，并......
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为提高光纤传感系统的复用能力，常将多个谱型重叠的传感器串联，由此引发的串扰效应会导致测量误差的产生，从而需要对串扰效应进行深入......
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为使现代电子侦察技术能适应信号密集、宽频谱、大动态的电磁环境, 提出了一种基于声光偏转器实现相关光信号处理的方法, 分析了射......
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采用激光诱导击穿光谱法(LIBS)检测保定周边三个产粮基地土壤中的重金属元素，并利用光谱定量法分析元素浓度。结果表明，三个基地中元......
傅里叶变换干涉成像光谱仪的光谱重构过程主要基于光源光谱和其对应干涉图的傅里叶变换对关系。采用傅里叶变换或余弦傅里叶变换方......
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用黄色和橙色硅酸盐荧光粉制备了白光LED, 调整黄粉和橙粉的比例得到不同的色温。 对样品进行光学测试, 发现黄粉与橙粉的比例小于......
采用假定所有旋转能级独立辐射和碰撞加宽劳仑茨线宽的准平衡模型,对XeCl B-X跃迁自发辐射谱进行了数值模拟计算,从而解释了高气压......
提出了一种在离轴数字全息再现过程中确定参考光角度和简化滤波器设计过程的方法。分析了模拟参考光照射下的离轴数字全息图的频谱......
分析了kW级光纤激光器实现单模激光输出的模式控制方式。采用主振荡功率放大方式，实现了工作波长1.08 μm、最大输出功率1.05 kW的......
采用UVPC和DSC等测试手段系统研究了稀土Sm2O3掺杂BaO－Al2O3－P2O5(BAP)激光防护玻璃的光谱性能及析晶性能。结果表明：吸收光谱的特征......
提出了一种新颖的光纤液位传感器。在普通单模光纤(SMF)中间熔接一段细芯单模光纤(TCSMF)，构成共轴光纤马赫曾德尔干涉仪(MZI)。液......
采用高温固相法合成了(La,Ce,Tb)BO3绿色发光粉，并对该发光粉进行了XRD和SEM分析。结果表明：(La,Ce,Tb)BO3的晶体结构和LaBO3相同，Ce3......
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采用提拉法生长了Yb掺杂原子数分数为0.5%的Yb:Y3Al5O12(Yb:YAG)晶体,对晶体的吸收光谱和荧光光谱进行了分析。与Yb掺杂原子数分数......
在稳态和准稳态近似下求解速率方程,计算了激光通道空间分离式激光器的输出光谱。从理论上和实验上对通过改变泵浦功率在增益介质......
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