| 电磁感应双光子光透明及共振吸收增强 |
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| 引用本文： | 杨苏辉,国秀珍,王冬,高锦岳.电磁感应双光子光透明及共振吸收增强[J].光学学报,2000,20(3):309-314. |
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| 作者姓名： | 杨苏辉 国秀珍 王冬 高锦岳 |
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| 作者单位： | 吉林大学物理系,长春,130023 |
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| 基金项目： | 国家自然科学基金!(696780 32 )资助项目 |
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| 摘 要： | 研究了相干场控制下的电磁感应双光子光透明。讨论了外加相干场对双光子吸收特性的影响 ,分析了电磁感应双光子光透明及共振吸收增强的物理机制。应用密度矩阵方法推导出相干场作用下双光子吸收上能级粒子数的二阶近似表达式 ,同时利用微扰法在原子缀饰态表象中推导出双光子跃迁速率的解析表达式。并讨论了系统中多普勒效应的影响。
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| 关 键 词： | 双光子 电磁感应光透明 密度矩阵 缀饰态。 |
| 收稿时间： | 1998/9/13 |
Electromagnetically Induced Two-Photon Transparency and Absorption Enhancement |
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| Yang Suhui,Guo Xiuzhen,Wang Dong,Gao Jinyue.Electromagnetically Induced Two-Photon Transparency and Absorption Enhancement[J].Acta Optica Sinica,2000,20(3):309-314. |
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| Authors: | Yang Suhui Guo Xiuzhen Wang Dong Gao Jinyue |
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| Abstract: | The electromagnetically induced two photon transparency (EITT) under the control of coherent field is investigated. The effect of external coherent field on the features of two photon absorption is discussed and the physical mechanism of eletromagnatically induced two photon transparency and resonance absorption enhancement is analyzed. The analytical expression of second order approximation of population in the up energy level of two photon absorption under the control of coherent field is derived from the equation of motion for the atomic density matrix. At the same time, the analytical expression of two photon transition rate is derived by the way of perturbation theory in the dressed states representation. The effect of Doppler broadening on two photon absorption profile is duscussed. |
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| Keywords: | two photon electromagnetically induced transparency density matrix dressed states |
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