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Na₂中由一对耦合能级相干叠加导致的双光子吸收的干涉增强效应

Interference enhancement of two-photon absorption caused by a pair of coherent superposition levels in Na₂

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【Author】 Zhang Yan Liang 1) Jiang Li 1) Niu Yue Ping 2) Sun Zhen Rong 1) Ding Liang En 1) Wang Zu Geng 1) 1) (key Laboratory for Optics and Magnetic Resonance Spectroscopy, Department of Physics, East China Normal University, Shanghai\ 200062,China) 2) (College of Physics and Information Technology, Shaanxi Normal University, Xi’an\ 710062,China)

【机构】华东师范大学物理系；光谱学与波谱学教育部重点实验室；陕西师范大学；物理学与信息技术学院；光谱学与波谱学教育部重点实验室上海200062；上海200062；西安710062；上海200062；

【摘要】在中间共振增强能级是一对波函数叠加的耦合能级的钠分子菱形四能级系统中 ,实验观察了由该两耦合能级的相干叠加作用所导致的不等频双光子吸收的干涉增强效应 ,并运用密度矩阵方程对这一实验现象进行了计算 ,其结果与实验符合得很好 .更多还原

【Abstract】 In the sodium dimer rhomb type four level system with a pair of coherent superposition levels, the interference enhancement of two photon absorption caused by coherent superposition of the coupling levels is experimentally observed. The calculated results using density matrix equation are in good agreement with the experimental results.更多还原