| 双光子共振激发钠原子的参量过程 |
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| 引用本文： | 张培林,赵朔嫣,何平.双光子共振激发钠原子的参量过程[J].清华大学学报(自然科学版),1988(6). |
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| 作者姓名： | 张培林 赵朔嫣 何平 |
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| 作者单位： | 现代应用物理系
(张培林，赵朔嫣)，现代应用物理系(何平) |
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| 摘 要： | 用激光观光子共振激发的原子使４ｄ２Ｄｊ态布居。自该态同时辐射两个光子回到基态，它们在钠蒸汽中传播时增强成为相干辐射，这过程称为参量过程．本文从实验上研究了参量过程谱线所包含的分量数目、各分量的波长和强度随激光波长、蒸汽温度的变化关系，并给出了基于原子极化、耦合波方程和位相匹配条件的理论分析。理论值和实验结果符合。
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| 关 键 词： | 钠原子 参量过程 非线性极化 双光子激发 位相匹配 |
Two-photon Resonant Optical Parametric Processes in Atomic Sodium |
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| Zhang Peilin,Zhao Shuoyan,He Ping.Two-photon Resonant Optical Parametric Processes in Atomic Sodium[J].Journal of Tsinghua University(Science and Technology),1988(6). |
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| Authors: | Zhang Peilin Zhao Shuoyan He Ping |
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| Institution: | Department of Modern Applied Physics |
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| Abstract: | Na 4d 2DJ state can be populated by two-photon excitation. It returns to ground state after emitting two photons which grow simultaneously to form coherent radiation lines in the vapor zone. This process is called optical parametric process. In this paper the components of the lines generated by parametric process, their wavelengths and intensities versus laser wavelength, oven temperature etc. are experimentally investigated. A theoretical analysis based on wave equation, atomic polarization, and phase-matched condition is also given. The theoretical values are found to be in agreement with the experimental results. |
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| Keywords: | atomic sodium parametric process nonlinear polarization two photon excitation phase match |
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