HPLC-DAD法测定辣椒及其制品中苏丹红的含量

建立了应用高效液相色谱测定辣椒粉及其少量含油制品中的苏丹红Ⅰ、Ⅱ、Ⅲ、Ⅳ含量的检测方法.采用Symmetry C18反相色谱柱(3.9mm×150mm,5μm),流动相为乙腈醋酸溶液(V乙磷:Vo.1%醋酸＝7∶1),等度洗脱,流速1.0mL/min;柱温30℃;检测波长230nm.在选定色谱条件下,苏丹红Ⅰ、Ⅱ、Ⅲ、...     

分段表面放电光抽运XeF(C-A)激光器

阐述了分段表面放电光抽运XeF(C -A)激光器的设计和实验技术。分段表面放电辐射源在 140nm～ 170nm辐射区域亮度温度Tb≈ 15× 10 3K ,用该辐射源作抽运源离解XeF2 获得了XeF(C -A)蓝绿 (4 70nm～ 495nm)激光输出 ,激光脉宽为 340ns、光谱宽度为 15nm。     

XeF2光解离波时空特性研究

利用分幅相机拍摄了不同实验条件下的XeF2光解离波图像，反映了解离波的形成过程，获得了不同XeF2初始浓度下光解离波半径、解离层厚度、发展速度随时间的变化曲线，分析了光解离波参数的时间、空间特性。结果表明，光解离波在目前实验条件下所达到的最大距离约3 cm，解离波发展速度最大达28 km/s；XeF2初始浓度越低解离波半径越大，发展速度越快，解离层厚度越厚。     

表面放电光泵浦XeF(C-A)激光数值模拟

 采用数值方法模拟表面放电光泵浦XeF(C-A)激光形成过程,分析反应粒子、气体温度、腔内损失、耦合透过率、XeF₂压力对激光输出的影响,数值计算结果与自行研制的表面放电光泵浦XeF(C-A)激光器的实验结果吻合较好。     

Locality Violation with Spin-Type W States without Using Inequalities

Using even and odd coherent states, we define a new state, which is called the spin-type W state. With the spin-type W states, we provide a new scheme for testing fundamental aspects of quantum mechanics and refuting local hidden variable theory without using inequalities. Finally, a scheme for preparing the spin-type W states, and discussion of experimental possibility and the effect of the measurement on physical observables due to a close orthogonality of the two coherent states are given.     

A “Which Way” Experiment of Two-Photon Interference

It is well known that the indistinguishability of particles causes interference. We give a “which way” experiment of two-photon interference marked with polarization. The result shows that the greater the distinguishability of the path by which two-photon passes, the lower the fringe visibility will be, and this phenomenon will disappear when the path becomes completely distinguishable.     

量子住处讲座续讲 第四讲 量子对策论

量子对策论是量子信息学的新兴分支，是经典对策论与量子信息学两门学科的交叉学科，由于引入了量大力学中的量子叠加性和纠缠态，量子对策得出了与经典对策迥然不同的结果。     

外场驱动对双原子Tavis-Cummings模型中原子和腔场性质的影响

研究受外部经典场驱动的双原子Tavis-Cummings模型中原子和腔场的特性. 分析了腔场初态为相干态的情况,求出外场驱动下原子系统粒子布居差、光场的平均光子数和Mandel Q参数，并进行了数值分析. 特别讨论了外部驱动场对此模型中原子和腔场性质的影响.     

Technical study of visible light wavelength division multiplexing using polymer optical fiber

Recently there has been considerable interest in the de-velopment of polymer optical fibers (POF). The ductil-ity of polymers is an important advantage and confers onPOF easy processing, easy handling, low costs, and largecore diameter[1]. POF has an extended applicability, suchas in computer networks, local area networks, data links,automobile, optical sensors, lighting, etc.. The large corediameter, up to 1 mm or more, enables high efficienciesof fiber coupling.We have demonstrated 100-M…     

角多路等间距分立阵列编解码方法

以18束脉宽10 ns的激光光束的编解码为例, 详细介绍了角多路激光束编解码方法的原理和特点。该方法利用等间距分立放置的反射镜支撑阵列和若干反射镜,激光束采用小角度入射和反射方式,通过激光束在反射镜之间的反射实现编解码, 编解码系统整体结构简洁紧凑, 使用阵列较少, 占用空间小,具有较强的扩展性,能适应不同编解码宽度要求, 同一组阵列既可用于编码也可用于解码。