| 用激光增益获取弱增益拉曼模式的受激拉曼散射光谱 |
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| 引用本文： | 普小云,杨正,江楠,陈永康,戴宏. 用激光增益获取弱增益拉曼模式的受激拉曼散射光谱[J]. 物理学报, 2003, 52(10): 2443-2448 |
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| 作者姓名： | 普小云 杨正 江楠 陈永康 戴宏 |
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| 作者单位： | 云南大学物理系,昆明 650091 |
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| 基金项目： | 国家自然科学基金（批准号：10174060）资助的课题. |
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| 摘 要： | 当酒精的弱增益拉曼模式处于罗丹明640染料分子的激光增益范围时，在由悬垂液滴构成的圆形谐振腔中，观察到乙醇分子C—H伸缩系列模中多个弱增益拉曼模式的受激拉曼散射（SRS）光谱.随着抽运光的增强，迅速增长的强增益拉曼模式的受激辐射抑制了其他弱增益模式的SRS，并导致染料激光的完全淬灭.通过分析圆形腔腔模的光子速率方程和激光染料分子的三能级粒子数速率方程，解释了观察到的实验现象.关键词：受激拉曼散射悬垂液滴弱拉曼增益模式激光增益
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| 关 键 词： | 受激拉曼散射 悬垂液滴 弱拉曼增益模式 激光增益 |
| 文章编号： | 1000-3290/2003/52(10)/2443-06 |
| 收稿时间： | 2002-11-14 |
| 修稿时间： | 2002-11-14 |
Observation of stimulated Raman scattering of weak-gain Raman modes by means of lasing gain |
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| Pu Xiao-Yun,Yang Zheng,Jiang Nan,Chen Yong-Kang and Dai Hong. Observation of stimulated Raman scattering of weak-gain Raman modes by means of lasing gain[J]. Acta Physica Sinica, 2003, 52(10): 2443-2448 |
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| Authors: | Pu Xiao-Yun Yang Zheng Jiang Nan Chen Yong-Kang Dai Hong |
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| Abstract: | The enhancement of stimulated Raman scattering (SRS) of weak-gain Raman modes is demonstrated by overlapping the Stokes wavelengths of the Raman modes with Dye lasing gain. Four SRS spectral lines related to C-H stretching modes of ethanol in a～10-5mol/L Rhodamine 640-doped ethanol pendant drop can be ob served, which are supported by the lasing gain of Rhodamine 640. The dye lasing is found to be partially and even totally suppressed by the intense SRS of ethanol as the pump intensity increasing from 1.2×108W/cm2 to 3. 3×108W/cm2. |
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| Keywords: | stimulated Raman scattering pendant drop weak-gain Raman mode lasing gain |
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