用于太阳光泵浦激光的抛物面环形阵列聚光器

Parabolic ring array concentrator for solar-pumped laser

摘要: 为研制适用于太阳光直接泵浦激光器的聚能系统，在分析菲涅尔透镜聚光原理及缺陷的基础上，提出抛物面环形阵列聚光器的设计方法。完成了由抛物面环形阵列聚光器、菲涅尔透镜及复合抛物面聚光器（CPC）组成的太阳光泵浦激光器二级聚能方案，并与传统菲涅尔透镜方案进行了对比。光线追迹仿真分析表明：新型聚光器能够克服传统菲涅尔透镜的色散、小棱镜面像差及光线遮挡的缺陷，从而提高聚能效，使用抛物面环形阵列聚光器的多级聚能方案较传统菲涅尔透镜的多级聚能方案聚光比提高约18.5%，更适合于大相对孔径、高聚光比聚光场合的应用。

Abstract: The defects of Fresnel lens was discussed and the design principle of parabolic ring array for solar-pumped laser was presented. A two-stage solar concentrator with parabolic ring array, Fresnel lens and compound parabolic concentrator(CPC) was designed . Ray-tracing simulations reveal that compared with the traditional Fresnel lens and CPC two-stage solar concentrator, the new concentrator can improve the optical efficiency by 18.5% and is more suitable for large aperture and high concentration ratio converging applications.