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THE 82S1/2→62D EXCITATION TRANSFER OF RUBIDIUM ATOMS INDUCED BY COLLISIONS WITH GROUND-STATE RUBIDIUM AND HYDROGEN MOLECULES 下载免费PDF全文
The processes of excitation transfer from the 82S1/2 state to the 62D state of rubidium in Rb(82S1/2)-Rb(52S1/2) and Rb(82S1/2)-H2 collisions have been studied experimentally. During irradiating the Rb vapor, mixed with H2, by two light beams for selective stepwise excitation, the Rb 82S1/2→52P3/2 direct fluorescence and the Rb 62D3/2→52P1/2 sensitized fluorescence have been measured as a function of H2 gas pressure. The measurements yielded the cross-sections σ(82S1/2→62D) and σ*(82S1/2→62D) of Rb 82S1/2→62D excitation tranfer induced by collisions with 52S1/2 atom and H2 molecules respectively. The results are discussed in detail. 相似文献
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In this paper, th: optical Bloch equation with relaxation term in saturated spectroscopy is solved directly with the help of the perturbation theory and Laplace inversion and approximate: results of any order are given when coherence effects in the strong field are taken into account.The peculiarities of the line shape of weak-wave absorption can be explained by the vector model. 相似文献
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本文利用矢量模型详细地讨论了气体介质饱和吸收和饱和色散效应的计算方法。文中给出了利用微扰法求解矢量方程各级近似的递推公式,并给出一级和二级近似的具体结果,进一步发展和完善了J·I·Cotrim Vasconcellos等人对气体饱和吸收和色散效应的矢量模型算法。此外,本文对弛豫的数学处理方法也与文献[1,2]不同。 相似文献
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有横向分布为TEM10模的信号注入的环形腔激光器的双稳性 总被引:1,自引:0,他引:1
本文假设注入环形腔激光器的信号的横向场分布为TEM_(10)模.利用平均场近似方法得到了单横模共振时的定态方程,并进行了线性稳定性分析.结果表明,对优质腔来说,与Lugiato等讨论的注入信号为平面波光束及高斯光束(TEM_(00)模)的情况不同,注入光场横向分布具有TEM_(10)模的横式时,环形激光器的输出呈现双稳性. 相似文献
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本文利用微扰论和拉格朗日变换终值定理,将光学布洛赫(Bloch)方程推广应用于饱和吸收光谱之中,得到考虑相干效应的各级近似表达式,并从矢量模型出发,讨论了弱波吸收线形特性的物理过程. 相似文献
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本文测量了~(127)I_2饱和吸收稳定612nm He-Ne激光器的调制频移,给出了612nmHe-Ne/I_2激光器稳定在~(127)I_2X~1∑_9~+→B~3∏_(ou)~+、R(47)9-2的r、q、p、o、n各条超精细饱和吸收谱线时的调制频移。实验结果表明,对三次谐波稳定的612nm He-Ne/I_2激光器稳定在r、q、p、o、n各线上时的调制频移(大小和方向)是不同的;分析表明各超精细~(127)I_2吸收线处于Lamb凹陷不同背景位置时,调制频移的方向是不同的,但是Lamb凹陷引起的调制频移方向 相似文献