隔环结构的Ne-H_2-CuBr激光放电管气体温度径向分布

Analysis of gas temperature radial distribution in Ne-H_2-CuBr laser discharge tube with diaphragms

针对溴化亚铜激光器中放电管径向温度不均匀现象,在工程设计中同时采用隔环结构放电管设计方案和溴化亚铜激光放电管充氢方案。对隔环结构及隔环结构同时充氢的CuB r激光放电管温度场进行了分析。利用简化的热流耗散泊松方程,给出了激光放电管内温度场分布的数学模型,获得了激光放电管气体温度场径向分布的解析表达式,明确了温度分布与输入电功率及缓冲气体热传导系数之间的关系,得到了与实验一致的结果,为该类激光器的实用化提供了理论分析依据。

Two design schemes, diaphragms discharge tube and CuBr hydrogen-filled laser discharge tube, were adopted in the engineering design in order to overcome the non-uniformity of radial temperature in the discharge tube of CuBr laser. The diaphragm structure and the temperature field of the hydrogen-filled CuBr laser discharge tube are analyzed. Based on the heat flow dissipation Poisson equation, a mathematical model of temperature field distribution in the laser discharge tube is set up, an analytic expression for the gas temperature field radial distribution in the laser discharge tube is derived. The relation between the temperature distribution and the input electric power ＆ thermal conductivity of the buffer gas is defined. The achieved result agrees with experiment result. A theoretical analysis is provided for the applications of such laser.