| 热容激光器介质热效应及补偿分析 |
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| 引用本文： | 沈洪斌,闫宗群,黄富瑜.热容激光器介质热效应及补偿分析[J].应用激光,2008,28(5). |
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| 作者姓名： | 沈洪斌 闫宗群 黄富瑜 |
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| 作者单位： | 军械工程学院光学与电子工程系,河北,石家庄,050003 |
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| 摘 要： | 阐述了闪光灯抽运钕玻璃棒热容型激光器重频工作方式下瞬态温度分布模型和热透镜焦距模型,进行了数值计算,并和常规冷却模式下进行了比较研究.结果表明:热容型激光器工作物质中心温度低于表面温度,温度梯度较小;热容模式下热透镜效应为负透镜效应,且热效应的变化趋势比冷却模式下简单得多,热畸变的大小比冷却模式也小,抽运结束后恢复到无畸变状态的时间较之冷却模式也短的多.最后分析了热透镜效应的补偿方法,利用动态调腔法是困难的,利用双压电晶片镜法是可行的.
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| 关 键 词： | 热容激光器 热透镜效应 补偿方法 |
Thermal Effect and Compensating in Heat Capacity Operation |
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| Shen Hongbin,Yan Zongqun,Huang Fuyu.Thermal Effect and Compensating in Heat Capacity Operation[J].Applied Laser,2008,28(5). |
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| Authors: | Shen Hongbin Yan Zongqun Huang Fuyu |
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| Affiliation: | Shen Hongbin,Yan Zongqun,Huang FuyuDepartment of Optics , Electronic Engineering,Ordnance Engineering College,Shijiazhuang,Hebei 050003,China |
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| Abstract: | The transient temperature distribution model and thermal lens focal model of flash lamp pumped heat capacity Nd:glass rod lasers in repetition rate operation are presented,the models are numerical calculated and compared with the conventional cooling operation.Numerical calculating results showed that the gain medium's temperature in interior is even lower than in surface,and the temperature grads is littler;the calculation manifests that the thermal lens effect of heat capacity operation is negative lens e... |
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| Keywords: | Heat capacity laser thermal lens effect compensation method |
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