利用非线性反射镜锁模激光器的动力学过程分析

本文报导了对基于一种新型非线性反射镜的被动锁模激光器的动力学过程进行的研究.结果指出,该锁模过程始终存在于一种动态平衡中.最后,文中给出了该锁模激光器的输出脉宽的具体表达式.     

FULL DISCRETE NONLINEAR GALERKIN METHOD FOR THE NAVIER-STOKES EQUATIONS

This paper deals with the inertial manifold and the approximate inertial manifold concepts of the Navier-Stokes equations with nonhomogeneous boundary conditions and inertial algorithm. Furtheremore, we provide the error estimates of the approximate solutions of the Navier-Stokes Equations.     

ZXJ10—开放的交换平台

本文详细介绍了ＺＸＪ１０机交换平台的技术特点－软件和硬件结构的模块化，系统控制体系的全分散化，说明了ＺＸＪ１０机的开放性和可扩充性，以及在ＺＸＪ１０机大型数字化平台上不断实现的新业务和新功能。     

超短脉冲光电导开关的全波分析

本文采用时域有限差分法直接求解包含传导电流的三维麦克斯韦方程组,对超短脉冲光电导开关进行全波分析,分析中考虑了静电场影响,采用了比较精确的光电导数学模型。本文还讨论了开关输出信号的模式组成和激光脉冲能量、脉宽对开关性能的影响,并给出了光电导开关响应在不同时刻的三维图形。     

一种8毫米波变张角,半径突变多模圆锥馈源

我们研制了一种8毫米波变张角、半径突变的多模圆锥馈源。计算出其模比并推导出其辐射方向图公式;给出其在两个主平面——E平面与H平面上的辐射方向图和波束场分布特性的测试结果以及电压驻波比VSWR的测量结果;同时给出频带和旁瓣特性。分析与测试共同表明,在34.5GHz～37GHz频带里,该多模馈源的辐射图在大于24dB范围内获得幅度等化且不出现旁瓣,因此具有一定的应用价值。     

Ab initio calculations of accurate dissociation energy and analytic potential energy function for the second excited state B1∏ of 7LiH

The reasonable dissociation limit of the second excited singlet state B¹∏ of ⁷LiH molecule is obtained. The accurate dissociation energy and equilibrium geometry of the B¹\Pi state are calculated using a symmetry-adapted-cluster configuration--interaction method in full active space. The whole potential energy curve for the B¹∏ state is obtained over the internuclear distance ranging from about 0.10nm to 0.54nm, and has a least-square fit to the analytic Murrell--Sorbie function form. The vertical excitation energy is calculated from the ground state to the B¹∏ state and compared with previous theoretical results. The equilibrium internuclear distance obtained by geometry optimization is found to be quite different from that obtained by single-point energy scanning under the same calculation condition. Based on the analytic potential energy function, the harmonic frequency value of the B¹∏ state is estimated. A comparison of the theoretical calculations of dissociation energies, equilibrium interatomic distances and the analytic potential energy function with those obtained by previous theoretical results clearly shows that the present work is more comprehensive and in better agreement with experiments than previous theories, thus it is an improvement on previous theories.     

全反射镜在光纤中的应用

光子晶体是在80年代末90年代初提出的新概念,也是现在人们很感兴趣的一种新材料,本文讨论了在传统光纤中引入由一维光子晶体形成的全反射镜,从而改善光纤在大曲率弯曲时的传输损耗.     

光子交换技术的前景简述

本文首先指出光纤通信向全光网推进的趋向，认真研究光子交换技术的必要性。其后简单说明光子交换有关的波分多路／波分多址系统，空分交换器，交叉连接结点，波长路由器和波长转换器，光电子集成／光子集成技术。最后给出作者个人见解的结论．     

热光双稳态的临界入射功率与临界温升

本文考虑到F—P腔夹层介质和后反射镜均具有一定的吸收时,推导出产生热致色散光学双稳态的临界入射光功率P_c和临界温升△T_c的数学解析表达式。理论计算的 △T_c值与实验值非常符合。为了得到最佳光学双稳态回线和避免腔内的纵向温度梯度,夹层介质和后反射镜应具有一定的匹配吸收。