THE 82S1/2→62D EXCITATION TRANSFER OF RUBIDIUM ATOMS INDUCED BY COLLISIONS WITH GROUND-STATE RUBIDIUM AND HYDROGEN MOLECULES

The processes of excitation transfer from the 8²S_1/2 state to the 6²D state of rubidium in Rb(8²S_1/2)-Rb(5²S_1/2) and Rb(8²S_1/2)-H₂ collisions have been studied experimentally. During irradiating the Rb vapor, mixed with H₂, by two light beams for selective stepwise excitation, the Rb 8²S_1/2→5²P_3/2 direct fluorescence and the Rb 6²D_3/2→5²P_1/2 sensitized fluorescence have been measured as a function of H₂ gas pressure. The measurements yielded the cross-sections σ(8²S_1/2→6²D) and σ^*(8²S_1/2→6²D) of Rb 8²S_1/2→6²D excitation tranfer induced by collisions with 5²S_1/2 atom and H₂ molecules respectively. The results are discussed in detail.     

532 nm法拉第光学滤波器传输特性

本文对工作在波长为532.33nm的激发态钾(K)原子法拉第光学滤波器进行了分析与讨论。结果表明这种工作在钾4P1／2←8S1／2跃迁谱线的滤波器的峰值透过率为50%,等效带宽为4GHz。同时滤波器的传输特性跟激光泵浦功率以及外加磁场强度并不是线性相关;所需激光泵浦功率的范围为0.8～6mW*cm－2。     

横向塞曼激光器中非线性混频效应的理论

本文应用Lamb半经典理论,采用矢量场模型,研究了横向Zeeman激光介质的高阶非线性效应,计算了该情况下横向Zeeman激光介质的三阶极化强度和光强的解析表达式,从理论上解释了σ与π光差拍畸变以及σ与π光本身的高次谐波现象,给出了发生畸变的物理原因。 关键词：     

参加美国物理教师协会冬季(1982)集会并访问几所美国大学的简况

我们三人受教育部派遣,于1982年一月二十五日到二十八日在美国旧金山参加美国物理教师协会1982年冬季集会。 在旧金山开会期间我们受到一些学校物理教师的邀请,从二月一日到二月十二日访问八所大学,它们是: 加州大学贝克来分校;加州州立大学长滩分校;加州大学欧伐音分校;南加州大学;加州州立大学洛杉机分校;圣迪埃哥布格罗斯蒙学院;加州大学圣迪埃哥分校;西雅图的华盛顿大学。 我们所访问大学属于三种类型:第一类是加州大学各分校,着重科研和培养研究生。教师教学任务一般为每周三至六小时,教师提升,注意科研成就。第二类是加州州立大学,以…     

THE 82S1/2→62D EXCITATION TRANSFER OF RUBIDIUM ATOMS INDUCED BY COLLISIONS WITH GROUND-STATE RUBIDIUM AND HYDROGEN MOLECULES

The processes of excitation transfer from the 8²S_1/2 state to the 6²D state of rubidium in Rb(8²S_1/2)-Rb(5²S_1/2) and Rb(8²S_1/2)-H₂ collisions have been studied experimentally. During irradiating the Rb vapor, mixed with H₂, by two light beams for selective stepwise excitation, the Rb 8²S_1/2→5²P_3/2 direct fluorescence and the Rb 6²D_3/2→5²P_1/2 sensitized fluorescence have been measured as a function of H₂ gas pressure. The measurements yielded the cross-sections σ(8²S_1/2→6²D) and σ^*(8²S_1/2→6²D) of Rb 8²S_1/2→6²D excitation tranfer induced by collisions with 5²S_1/2 atom and H₂ molecules respectively. The results are discussed in detail.     

Rb~(87)原子基态超精细0—0跃迁的章动和弛豫现象

本文对Rb~(87)原子基态超精细0—0跃迁的章动和弛豫讯号作了理论估算和实验观测。实验结果与理论估算定性地符合。     

早期波谱学在北京大学

简单回顾了1954-1966年北京大学波谱学的活动。     

THE 82S1/2→62D EXCITATION TRANSFER OF RUBIDIUM ATOMS INDUCED BY COLLISIONS WITH GROUND-STATE RUBIDIUM AND HYDROGEN MOLECULES

The processes of excitation transfer from the 8²S_1/2 state to the 6²D state of rubidium in Rb(8²S_1/2)-Rb(5²S_1/2) and Rb(8²S_1/2)-H₂ collisions have been studied experimentally. During irradiating the Rb vapor, mixed with H₂, by two light beams for selective stepwise excitation, the Rb 8²S_1/2→5²P_3/2 direct fluorescence and the Rb 6²D_3/2→5²P_1/2 sensitized fluorescence have been measured as a function of H₂ gas pressure. The measurements yielded the cross-sections σ(8²S_1/2→6²D) and σ^*(8²S_1/2→6²D) of Rb 8²S_1/2→6²D excitation tranfer induced by collisions with 5²S_1/2 atom and H₂ molecules respectively. The results are discussed in detail.     

横向Zeeman He—Ne激光器中非线性混频效应的理论

本文在文献[1]的基础上,考虑了原子速度的Maxwell分布,利用矢量场模型和Lamb半经典理论,研究了横向Zeeman He-Ne激光器中近简并四波混频效应,给出了高阶非线性项的计算公式,从理论上解释了拍频曲线畸变的物理原因。并利用计算机进行了数值求解,结果表明本文的理论预言与实验结果相符。 关键词：     

Rb87原子基态超精细0—0跃迁的章动和弛豫现象

本文对Rb⁸⁷原子基态超精细0—0跃迁的章动和弛豫讯号作了理论估算和实验观测。实验结果与理论估算定性地符合。 关键词：