二极管端面泵浦Nd:YAG 946 nm激光器理论分析及其相关量的数值模型

利用激光谐振腔处于稳态时的速率方程导出了准三能级Nd：YAG　946nm起振时透射损耗与最佳激光晶体长度的关系，我们直观地给出了其计算机模拟，在与1064nm透射损耗相比较的基础上，形象给出了一系列情况下的最低镀膜要求(对这个问题系统、细致的讨论在以往的文献中还没有见过)，并且计算机模拟了阈值、输出功率和它们各自相关量的关系，为设计室温下高效运转的946nm激光器提供了必要的理论数值参照．这种分析方法对此类低增益，准三能级或三能级系统有借鉴意义。

ANALYSIS AND NUMERICAL MODELING TO THE OPERATION AT 946 nm OF Nd:YAG LONGITUDINALLY PUMPED WITH DIODE LASER

Numerical modeling has been given by us to the equation describing the relation between optimal crystal length and the transmission of 946 nm output. The equation had been derived of the laser rate formula of the steady-state case in the laser cavity. Contrasting the output transmission between 946 nm and 1064 nm, we have given a series of diagrams which discribe the minimized claims to coat in many cases(Discussing the problem exhaustively and systematically has not been found in previous documents). How the concerned factors influence the 946 nm threshold and its output power has been given also. All discussed there will be useful for more efficient operation at 946 nm of Nd:YAG. The metholds adopted dealing with the low gain and quasi-three-lever of three-lever system will be enlightening.