论文部分内容阅读
一、引言金属蒸汽激光器是一种实用而有发展前途的器件,目前除了对该种器件在提高寿命、效率和稳定性等方面进行研究之外,还致力于在可见和紫外波段探索高效率的新型器件,在阐明和探讨金属蒸汽激光器的激发机理,常常涉及到激光器中饱和电流、蒸汽密度(或气压)的关系。单重态和三重亚稳态粒子密度以及自发辐射的测量和彭宁(F.M.Penning)碰撞截面的估算。这些参数量直接或间接的与金属的温度有关。例如,采用钩状光谱法(hook method)测量He-Cd放电管中的粒子密度时,要求金属蒸发器内被加热的温度需控制在
I. Introduction Metal vapor laser device is a practical and promising device, in addition to the device in the current study to improve life expectancy, efficiency and stability, but also to explore in the visible and ultraviolet band of high efficiency New devices, in elucidation and discussion of the excitation mechanism of metal vapor lasers, often involves the saturation current in the laser, the relationship between the vapor density (or pressure). Measurement of singlet and triplet metastable particle densities and spontaneous emission and estimation of collision cross section by F. M. Penning. The amount of these parameters is directly or indirectly related to the temperature of the metal. For example, when measuring the particle density in a He-Cd discharge tube by the hook method, the temperature required to be heated in the metal evaporator is controlled