卤化铜激光纵向泵浦窄线宽染料激光器的研究

本文详细描述了 ＣｕＢｒ蒸气激光泵浦的、具有透镜和棱镜扩束、由Ｌｉｔｔｒｏｗ光栅调 谐的新型纵向泵浦染料激光器的设计和工作性能。对Ｒｈ６Ｇ染料，获得了线宽小于 ０．０１ｎｍ重复脉冲频率为１６ｋＨｚ，散射光少、超辐射光弱．发散角小的高质量可调谐染 料激光。本文指出了透镜能够压窄线宽所满足的必要条件；推导了耦合输出镜最佳反射 率和泵浦功率损耗，浓度等参量的关系。理论指出，若进一步增加泵浦功率和提高腔中 光学元件的性能，转换效率将明显增加。

Study on Copper-halide Laser Axial-pumped Dye Laser with Narrow Linewidth

The peapr presents the design and operating characteristics for a high prf CuBr laser axial-pumped Rh6G dye-laser oscillator using Littrowmounted grating cavity incorporating double prism beam expander and two lenses. The dye laser with linewidth less than 0.01 urn, 16KHz repetition frequency, low scattered light, weak superradiance, and small divergent angle is obtained. The requirements of lens for narrowing the linewidth are indicated with the approximate criterion formula. The equation that determines the function of optimum reflection Rk of the output coupling mirror M1 versus pump power, dye concentration, and loss is deduced. The theory shows that conversion efficiency can be enhanced by increasing the pump power and using high quality optical elements.