Abstract:Based on the mechanism of Complementary Suppression Modulated Transmission (CSMT), a photonic logic device was designed, in which five classical double variable binary logic operations were implemented with the intensity of incident violet beam as the input to the logic gate and the transmission as the output of the gate. This photonic device can be turned into different state using different illumination.

Abstract:The behaviors of the electroluminescent polymers under applied electric fields were studied by using the tight binding model of electron lattice coupling and solving the real tmie Newton dynamical equation. It was discovered that (1) the extra electron and hole injected by the applied electric field make the lattice relaxation, and bipolaron excitons are formed. (2) there exists a critical electric field. When an applied field is equal to or larger than the critical field, the bipolaron exciton will be dissociated into positive and negative polarons, leading to photoluminescence quenching. The result is consistent with the relevant experiments, and it also implies that the bipolaron exciton is a kind of luminous species in polymers.

Abstract:报道不同层厚的ＡｌＡｓ／ＡｌｘＧａ１－ｘＡｓ及ＧａＡｓ／ＡｌｘＧａ１－ｘＡｓ短周期超晶格的纵光学声子模的室温喇曼散射测量结果．在非共振条件下，观察到ＡｌＡｓ／ＡｌｘＧａ１－ｘＡｓ中限制在ＡｌｘＧａ１－ｘＡｓ混晶层中的类ＧａＡｓＬＯ限制模和限制在ＡｌＡｓ层中的ＡｌＡｓＬＯ限制模，还观察到ＧａＡｓ／ＡｌｘＧａ１－ｘＡｓ中限制在ＡｌｘＧａ１－ｘＡｓ混晶层中的类ＡｌＡｓＬＯ限制模和限制在ＧａＡｓ层中的ＧａＡｓＬＯ限制模．在近共振条件下，还观察到了ＡｌＡｓ／ＡｌｘＧａ１－ｘＡｓ中ＡｌＡｓ的界面模．根据线性链模型，把测量的ＬＯ限制模的频率按照ｑ＝ｍｎ＋１２πα０展开，给出了ＡｌｘＧａ１－ｘＡｓ混晶的类ＡｌＡｓ支和类ＧａＡｓ支光学声子色散曲线．

Abstract:The ultrafast dynamics of nonequilibrium carriers of LT GaAs was studied using femtosecond spectroscopy. The effects of carrier initial scattering, carrier phonon interaction and carrier trapping on carrier relaxation properties were analyzed. A carrier trapping time of 500fs was measured, which was found to increase with decreasing carrier excess energy.

Abstract:报道一种通过转动样品来实现空间调制微分反射（ＤＲ）光谱技术，给出ＧａＡｓ／ＡｌＧａＡｓ多量子阱和应变ＩｎＧａＡｓ／ＧａＡｓ多量子阱在室温下的ＤＲ谱实验测量结果，并与光调制反射谱（ＰＲ）实验和理论计算结果相比较．实验证明ＤＲ谱的信号比ＰＲ谱更强，可达１０－２量级，两者一致并与理论计算结果符合得很好．ＤＲ谱是研究薄膜和微结构的有效方法

Abstract:用皮秒ＹＡＧ激光器的倍频光（５３２ｎｍ）和三倍频光（３５５ｎｍ），对偶氮苯材料作激发态增强的双波耦合实验研究，发现材料处于激发态受激发时的三阶非线性光学电极化率比电子均处于基态时增强一个数量级．激发态时的非线性时间过程也有所缩短．用激子相位空间充满理论，对实验结果进行了理论上的解释．

Abstract:采用反射式扫描近场光学显微技术分别对直径为５μｍ和１０μｍ的图钉式ＩｎＧａＰ光学微盘进行了形貌和光致发光的近场图样测量和研究，并与由常规光学荧光显微镜测得的荧光图象相比较．结果表明ＩｎＧａＰ微盘的近场发光图样不仅反映出荧光图象的回音壁模式特征，即沿微盘周界显示为一圈红色亮环，而且证实荧光图像中的红色亮环实际上与更精细的由分立的周期性亮点组成的近场光场分布相对应．结合微盘内部与外部的近场分布可以获得光学微盘中发光模式的重要信息．

Abstract:采用真空蒸镀的方法在玻璃、石英和硅衬底上制备了Ｃ６０／７０薄膜样品，膜厚范围在１５０～７００ｎｍ．用自制的高精度、自动化光度法椭偏光谱仪在２３０～６００ｎｍ波谱范围内测量了掺碘前后Ｃ６０／７０薄膜的椭偏光谱．用洛伦兹振子模型分析了这些椭偏光谱，得到了洛伦兹线型参数值Ｅ０、Ｅｐ、和Γ，并与有关Ｃ６０／７０掺钾的文献进行了比较

Abstract:采用Ｈｕｙｂｒｅｃｈｔｓ线性组合算符和变分法相结合的方法，研究了极性晶体膜内电子与体纵光学声子弱耦合、与表面光学声子强耦合系统的基态能量，得到了作为膜厚和耦合常数函数的极化子的自陷能，对ＫＣｌ晶体进行了数值计算，结果表明，不同支声子与电子相互作用对极化子自陷能的贡献大不相同

Abstract:A series of Au and Ag films was deposited on the Dove prisms with different refractive indices. By this solid contacting configuration, it was found that the spectra of dielectric function measured at the metal substrate interface do change with the refractive index and differ from those measured at the metal air interface in both the Drude and interband transition regions. This phenomenon may be explained by the surface optical properties of the noble metals, which will strongly depend on the ambient. The reconstruction of the surface state related to the different medium may account for the effect that should be taken into consideration in the optical and magneto optical applications involving metallic multilayer film structure design.

Abstract:详细研究了Ｃｏ３４Ｃｕ６６颗粒膜在不同退火温度下的磁光性质．结果表明：未退火时在测量的能量范围内，位于３．８ｅＶ处有一θｋ峰．随着退火温度的升高，θｋ有不同程度的增加，当退火温度高于２００℃时，可以观察到在２．１ｅＶ附近出现一个θｋ的增强峰．其中２．１ｅＶ处的峰来源于Ｃｕ的带间跃迁，３．８ｅＶ处的峰来源于Ｃｏ．面内和极向Ｋｅｒｒ回线的测量表明：经退火后Ｃｏ颗粒变成平行于膜面的盘状

Abstract:用ＡｒＦ准分子脉冲激光沉积法（ＰＬＤ）在石英玻璃衬底上制备均匀透明的ＳｒＢｉ２Ｔａ２Ｏ９铁电薄膜．紫外透射光谱研究表明在波长为３７０～９００ｎｍ范围薄膜具有很好的透光性，在３２０ｎｍ处有一陡峭的吸收边，由半导体理论计算得到薄膜的禁带宽度为３．２５ｅＶ，ＦＴＩＲ红外光谱研究表明薄膜晶格振动的特征频率约为２．４×１０１３Ｈｚ．

Abstract:Both pure Fe 3O 4 magnetic fluids and that containing polystyrene spheres composite magnetic fluids were prepared. The magneto optical effects of different samples were measured by the magneto optically modulated double frequency method. The author analyzed the results and suggested that the different arrangement of nonmagnetic spheres in the composite magnetic fluids affects its magneto optical property.