LD泵浦光在侧泵模块水冷结构传输中的偏振态变化和光强衰减分析

Polarization State Change and Light Intensity Attenuation in The LD Side-pumped Laser Module

摘要:

以LD泵浦光在侧泵模块水冷结构中的传输过程为研究内容,基于模块结构参数、光波传输特性及介质透光特性,系统分析了泵浦光在各介质表面和内部的偏振态变化、光强衰减过程及变化规律。重点分析了由介质表面菲涅尔效应和内部吸收效应等造成的光强衰减；计算了泵浦光在水冷结构中单次往返过程的损耗系数和偏振态变化矩阵。分析结果对于优化模块泵浦效率、增强散热效果等有一定借鉴作用。

Abstract:

The transmission process of LD pump light in the water cooling structure of side pump module is studied in this paper. Based on the influence of module structure parameters, light wave transmission characteristics and medium transmission characteristics, the polarization state change, light intensity attenuation process and change rules of pump light on the surface and inside of each medium are systematically analyzed. The attenuation of light intensity caused by the surface Fresnel effect and internal absorption effect is mainly analyzed. Finally, the loss coefficient and polarization state change matrix of the pump light in a single round trip in a water-cooled structure are calculated. The analysis results can be used for reference to optimize the pumping efficiency and enhance the heat dissipation effect of the module.