溴化亚铜激光放电管径向声波共振现象研究  

Analyses of radial acoustic waves resonance in CuBr laser discharge tube

作　　者：马涛[1] 

机构地区：[1]浙江工商大学信电学院,浙江杭州310035

出　　处：《量子电子学报》2006年第5期617-620,共4页Chinese Journal of Quantum Electronics

基　　金：浙江省自然科学基金(M603134)资助项目

摘　　要：为解决大功率溴化亚铜激光放电管中声共振造成的输出功率不稳定问题,通过数值分析的方法给出了溴化亚铜激光放电管内径向声波振动的数学模型,并获得了激光放电管内声波径向驻波分布的解析表达式,分析了放电频率与激光管固有频率的关系,明确了声共振是导致激光介质重新分布并对输出功率产生影响的原因。由此得出结论:寻求一个在声共振本征基频附近的放电频率,并且能够使激光器稳定工作,是提高激光输出功率及提高激光器效率的一种有效手段。A simple model of acoustic oscillations was presented for the CuBr laser discharge tube. An analytical expression of the radial acoustic waves was given. The relation between natural frequency and pulse recurrence frequency was described. It was also found that the acoustic oscillations leads to a redistribution of the density of the active medium in the discharge tube, and this results in a resonant dependence of the average laser output power on the pulse recurrence frequency.

关 键 词：激光物理 径向声波共振 赫姆霍兹方程 径向温度分布 

分 类 号：TN248.21[电子电信—物理电子学]