UR90环形非稳腔输出模式特性的数值分析

将ＵＲ９０环形非稳腔引入氧碘化学激光器，对其输出模式进行了数值模拟计算，模拟包括了化学动力学，介质横向流动和物理光学等因素，得到与放大率Ｍ和光轴离截取镜距离ａ等参数相关的近场光强，位相及远场光强分布曲线。     

两种烷基碘化物分子理论研究及其发射谱测量

利用密度泛函理论(DFT)的B3LYP方法, 对烷基碘化物分子C2H2F3I和n-C3H4F3I的C—I解离势能曲线进行了理论计算, 并采用B3LYP方法和MPn(n=2, 3, 4)方法精确计算了C—I键解离能. 解离能计算进行了零点振动能(ZPVE)校正, 并运用完全均衡校正法对基函数重叠误差(BSSE)进行校正. 利用微波放电激励方法, 对C2H2F3I和n-C3H4F3I的发射谱进行观测. 实验结果表明, 通过微波放电激励这两种分子, 均可产生1315 nm发射谱, 说明利用微波放电可使C2H2F3I和n-C3H4F3I分子的C—I键解离, 从而产生碘原子.     

Selection of Acquisition Scan Methods in Intersatellite Optical Communications

In this paper, a theoretical model of the acquisition in intersatellite optical communications (IOC) is founded with the assumption that beacon pointing errors could be modeled as Gaussian random variables. An optimal scan method should be chosen according to the average acquisition time under a certain acquisition probability. With analysis of the most common scan methods during the establishment of IOC, the raster-spiral scanning can substitute the spiral scanning is found. The raster scanning and raster-spiral scanning are simulated using Monte Carlo method and the result shows the first one is optimal for acquisition in IOC.     

新型准分子——O_2(~1△g)二聚物增益特性的研究

本文从理论上估算了O_2(1~△_g)二聚物的增益系数,在实验中以微波(2450 MHz)激励产生激发态(1~△_g)的氧分子,利用放大的自发辐射法,首次获得了波长为6561nm处介质的增益特性曲线。当气压为0.3 torr,激发功率为300W时,净增益为0.0183cm~(-1)可望实现激光振荡。     

O2（^1△g）二聚物激光振荡研究

从理论上估算了O_2 (~1△_g)二聚物激光输出功率,在实验中以微波(2.450GHz)激励高纯氧产生0_2(~1△_g)二聚物,采用平凹稳定谐振腔,首次在波长6561nm处实现了O_2(~1△_g)二聚物的激光振荡,当充入氧气压强为133.3pa,微波激励功率为600W时,激光输出功率可达100μW,此结果在数量级上与理论估算相同.另外还测得激光束散角约37.3mrad.