| 激光二极管端面抽运固体激光器的热效应和热透镜焦距测量 |
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| 引用本文： | 潘孙强,刘崇,赵智刚,董延涛,相方莉,葛剑虹,项震,陈军.激光二极管端面抽运固体激光器的热效应和热透镜焦距测量[J].中国激光,2010(10). |
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| 作者姓名： | 潘孙强 刘崇 赵智刚 董延涛 相方莉 葛剑虹 项震 陈军 |
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| 作者单位： | 浙江大学现代光学仪器国家重点实验室;浙江长征职业技术学院; |
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| 基金项目： | 国家自然科学基金青年科学基金(60908013)资助课题 |
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| 摘 要： | 激光二极管(LD)端面抽运固体激光器的热效应是影响激光输出特性和系统综合性能的重要因素,因此准确的热透镜焦距测量是谐振腔设计的重要前提。从热传导方程入手,计算了LD端面抽运晶体的温度梯度分布,求出探测光束经过晶体后的相位差分布,通过傅里叶变换得到探测光的夫琅禾费衍射图样。基于上述理论模型,提出了一种利用探测光的夫琅禾费衍射图样测量热透镜焦距的新方法,可实时在线测量。由夫琅禾费衍射图样求出光程差,进而由光程差可求出激光晶体的热透镜焦距。实验测量了激光晶体的热透镜焦距,并与非稳腔法实验数据进行对比,证明了这种方法的可行性。
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| 关 键 词： | 激光器 端面抽运固体激光器 热透镜焦距 夫琅禾费衍射 |
Thermal Effects and Thermal Focal Length Measurement of Laser Diode End-Pumped Solid-State Lasers |
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| Pan Sunqiang Liu Chong Zhao Zhigang Dong Yantao Xiang FangliGe Jianhong Xiang Zhen Chen JunThe State Key Laboratory of Modern Optical Institution,Zhejiang University,Hangzhou,Zhejiang ,ChinaZhejiang Changzheng Professional & Technical College,Zhejiang ,China.Thermal Effects and Thermal Focal Length Measurement of Laser Diode End-Pumped Solid-State Lasers[J].Chinese Journal of Lasers,2010(10). |
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| Authors: | Pan Sunqiang Liu Chong Zhao Zhigang Dong Yantao Xiang FangliGe Jianhong Xiang Zhen Chen JunThe State Key Laboratory of Modern Optical Institution Zhejiang University Hangzhou Zhejiang ChinaZhejiang Changzheng Professional & Technical College Zhejiang China |
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| Affiliation: | Pan Sunqiang1 Liu Chong1 Zhao Zhigang1 Dong Yantao1 Xiang Fangli2Ge Jianhong1 Xiang Zhen1 Chen Jun11The State Key Laboratory of Modern Optical Institution,Zhejiang University,Hangzhou,Zhejiang 310027,China2Zhejiang Changzheng Professional & Technical College,Zhejiang 310023,China |
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| Abstract: | Thermal effects of laser diode(LD) end-pumped solid-state laser are important factors,which affect the laser output characteristics and the system performance.The accurate thermal focal length measurement is an important prerequisite for resonator design.The temperature gradient distribution of LD end-pumped solid-state laser is calculated with the heat conduction equation.The phase difference and the Fraunhofer diffraction pattern of the probe laser are obtained.Based on the above theoretical model,a new m... |
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| Keywords: | lasers end-pumped solid-state lasers thermal focal length Fraunhofer diffraction |
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