共查询到19条相似文献,搜索用时 156 毫秒
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分别固定水平线圈和垂直线圈的电流后,在不同的光抽运信号下测定了铷样品吸收池的透射光强度与垂直线圈和水平线圈电流的关系曲线.得到了只有在正常光抽运信号下,透射光强度才与cos^2θ成正比的结论.指出了只有在正常光抽运信号下,地磁场的垂直分量被垂直线圈的磁场抵消时,吸收池的透射光强度才最强. 相似文献
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针对光参量放大实验中存在的参量转换效率低、输出光脉冲形状畸变和输出稳定性差等问题进行了详细研究,对注入信号光强、抽运光耗尽、增益饱和、和频过程等因素对参量过程的影响进行了详细分析讨论,并进行了光学参量放大的实验研究.理论和实验研究结果表明通过优化选择合适的注入信号光强、抽运光强和晶体长度等参数,使参量放大运行在深度增益饱和状态的稳定区,完全可以获得高质量高效率高稳定性的参量放大输出光.
关键词:
光参量放大
抽运光耗尽
增益饱和
稳定性 相似文献
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光磁共振实验中扫场和水平场关系的探究 总被引:1,自引:0,他引:1
光泵磁共振实验中,在磁共振信号观察时,常常会有光抽运信号同时出现的现象,这严重影响了实验的有效观察和准确测量。本文阐述了取合适的扫场和水平场的大小的关系,从而避免实验过程中磁共振信号和光抽运信号的同时出现,以确保实验的精准。 相似文献
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结合光磁共振实验的物理图像,提出测量朗德因子耵和地磁场的实验方案设计思路,并总结该实验近年教学的效果。 相似文献
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H. Bucka 《Zeitschrift für Physik A Hadrons and Nuclei》1966,191(2):199-208
Radio frequency transitions in the excited state of Rb atoms are observed by measuring the transmitted light in a resonance cell experiment. The influence of additional radio frequency transitions simultaneously performed between the Zeeman sub-levels of the ground state is studied. Methods for observing signals of the excited states without using fluorescent light as detector are discussed concerning the magnetic deflection of optical oriented atoms and also the influence of recoil of the scattered light quants on the direction of an atomic beam. 相似文献
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Optical pumping nuclear magnetic resonance system rotating in a plane parallel to the quantization axis 下载免费PDF全文
A model of an optical pumping nuclear magnetic resonance system rotating in a plane parallel to the quantization axis is presented. Different coordinate frames for nuclear spin polarization vector are introduced, and theoretical calculation is conducted to analyze this model. We demonstrate that when the optical pumping nuclear magnetic resonance system rotates in a plane parallel to the quantization axis, it will maintain a steady state with respect to the quantization axis which is independent of rotational speed and direction. 相似文献