摘要
为了提高非相干光纤激光组束系统的耦合效率,需要分析影响耦合效率的各参数。理论分析及仿真研究结果表明,较小的高斯模场纵向偏移、离焦度和透镜焦距,较大的光栅周期对提高耦合效率是有利的,并且还存在最佳的光斑半径。在优化的系统参数基础上,系统的平均耦合效率可以达到58.1%。
The paramters affecting combining system＇s coupling efficiency need to be analyzed in order to improve the incoherent fiber laser beam combination system. Through theoretical analysis and numerical simulations, it is proved that the lower lateral off-set, defocusing and lens focus,and the higher grating period would be advantageous,also an optimum spot radius exists which corresponds to a maximum value of coupling efficiency. Based on such optimized parameters, the average system coupling efficiency could be 58.1%.
出处
《半导体光电》
EI
CAS
CSCD
北大核心
2007年第4期568-571,共4页
Semiconductor Optoelectronics
基金
国家自然科学基金资助项目(60678018)
关键词
非相干光纤激光组束
耦合效率
纵向偏移
光栅周期
incoherent fiber laser beam combination
coupling efficiency
lateral off-set
grating period
