Abstract:The variations of the energy in optically excited C 60 and C 60 doped with alkali metal were studied with the tight binding model. It was found that the lattice deformation induced by optical excitation or alkali metal doping decreases the elastic energy and increases the electronic energy. This phenomenon is contrary to the energy variation in the lattice deformation induced by Peierls instability.

Abstract:用最新发表的ＨｇＣｄＴｅ材料的光学常数对ＭＢＥ工艺生长的ＨｇＣｄＴｅ／ＣｄＴｅ／ＧａＡｓ材料的透射光谱进行了理论计算，对受生长工艺破坏的衬底背面再次进行抛光处理，消除因表面不平整引起的漫反射效应，使实验测量得到的光谱曲线与理论计算结果很好地吻合，由此得到的ＨｇＣｄＴｅ和ＣｄＴｅ外延层的厚度和解理面上用显微镜测量的数值相同。

Abstract:A new type of millimeter wave integrated circuit antenna with high gain and simple structure designed based on the Fresnel zone plate was introduced. With the spectrum domain analysis,the formulae for radiation field and curves for antenna gain were discussed.Zoning of the plate considering the extra phase change from substrate was given hereafter.

Abstract:A broadband millimeter wave omnidirectional asymmetrical biconical horn antenna was investigated. A ridge waveguide coax line transition structure was designed to solve the feed problem of biconical horn antenna in millimeter wave band and to meet the engineering requirement that the input port of antenna must be a waveguide. The measurement data of omni directivity and input VSWR in the 26 40GHz band show good agreement with the design.

Abstract:利用三能级近似和多组三能级近似模型的光泵远红外激光增益解析表达式，通过迭代运算得到了ＣＯ２－１０Ｒ（８）泵浦ＮＨ３分子远红外激光的工作气压与输出光强的关系曲线和ＡＣＳ６ａｒｋ分裂的频谱曲线，以及最佳工作气压的理论值。

Abstract:The shortening length of chaff was derived based on the shortening effect of chaff by two methods.The theoretical calculation is consistent with the experimental results.The error distribution of chaff length was discussed, too.

Abstract:测量了ｎ－Ｈｇ１－ｘＣｄｘＴｅ在４．２Ｋ下的磁光电导光谱，观察到与杂质，缺陷有关的光电导峰，研究了它们随磁场的变化，并对这些光导峰发生的物理机制及杂质和缺陷可能的由来作了讨论。

Abstract:Taking the output signal to noise ratio ( SNR ) of systems as a criterion, the relationships among the detecting distance R , the noise equivalent temperature difference NETD , the minimal resolvable temperature difference MRTD , the minimal detectable temperature difference MDTD and the modulation transfer function of IR scanning detecting systems ( SDS ) were established. The testing methods for these figures of merit were also studied.As a result, the bases of the synthetic performance evaluation and the practical testing methods of IR SDS were provided.

Abstract:介绍了表征光学系统抑制水平的定量指标——点源透过率ＰＳＴ．提出了红外光学系统杂光指标ＰＳＴ的一种测试方法，并在１０．６μｍ波长处，测试了口径为１８０ｍｍ的全反射Ｒｉｔｃｈｅｙ－Ｃｈｒｅｔｉｅｎ红外系统在不同入射角时的点源透过率ＰＳＴ（θ）．

Abstract:探讨了将红外光纤（束）直接与靶目标和探测器耦合，用于低温辐射测温的理论和技术．导出了光纤的有效临界角．证明了在直接耦合时，光纤（束）接收和传输的功率与光纤和靶目标表面耦合间距无关；当耦合准直角变化在±１５°范围时，与准直角无关

Abstract:A new sensing method was presented, which is advantageous for selective detection of liquid density. The anomalous dispersion which is the theoretical basis of the new sensing method was discussed. The dependence of complex refractive index of matter having absorption band on wavelength was analyzed. The attenuation of reflectivity and the attenuated total reflection were studied. Initial experiments show that the sensing method is feasible.

Abstract:Several problems in developing two axis gimbaled mirror system of geostationary, three axis body stabilized meteorological satellite imager were studied and analyzed such as material and structure of the scanning mirror, driving manner choice system design and control.

Abstract:It was found that there are dual higher order modes which have the same circulation direction at W band based on the calculation of boundary value of electromagnetic field. The dual modes are close to each other. They can be used to realize dual frequency circulator,or to get broadband performance by partially staggering them. Experiments given in this paper verified the theoretical prediction. A broadband waveguide junction circulator at W band was developed. The performance of 8 GHz bandwidth with 18 dB isolation was obtained by staggering the dual higher order modes.