大功率双包层光纤准直器的建模与仿真分析  

Modeling and stimulation of high-power double-clad fiber collimator

作　　者：陆乔乔[1] 胡姝玲[1] 王鑫龙[1] 耿伟彪[1] 张春熹[1] 牛燕雄[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《红外与激光工程》2014年第7期2055-2060,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61074158)

摘　　要：研究了一种适用于大功率激光应用的双包层光纤准直器。考虑在制作准直器时,双包层光纤尾纤和C-lens透镜端面8°倾斜角度的影响,从高斯光束通过复杂光学系统的一般模型出发,利用矩阵光学的理论,在光线传输的子午面和弧矢面上分别进行建模计算,推导光线的传输变换矩阵。结合实际应用中光纤及C-lens透镜的相关参数,仿真分析了尾纤与C-lens透镜间距及C-lens透镜参数对准直器工作距离和出射光束腰直径的影响。研究结果对进行大功率准直器的设计具有指导意义。A double-clad fiber collimator applied in high-power lasers was proposed. Considering the 8° wedge angle of C-lens and the tail of double-clad fiber in the process of production, at the same time to consider the coupling efficiency with double-clad fiber tail, the transform matrix was modeled and calculated from the general model of Gaussian-beam through a complex optical system, using the theory of matrix optics in meridian plane and sagittal plane respectively. Combined with practical applications in double-clad fiber and C - lens related parameters, the influence of the distance between fiber tail and C-lens and the influence of the parameters of the C-lens on working distance and beam waist diameter of collimator were both stimulated and analyzed. The results may be to direct the design of collimator in high-energy laser system.

关 键 词：光束准直 C—lens 工作距离 束腰直径 

分 类 号：TN741[电子电信—电路与系统]