无球差非球面短程透镜的研究  

STUDY OF SPHERICAL-ABERRATION-FREE ASPHERICAL GEODESIC LENSES

作　　者：范俊清[1] 许承杰 鲁平[1] 汪贤秀 李公羽 马文生[2] 韩荣久[2] 王秀文[2] 

机构地区：[1]中国科学院长春物理研究所,长春130021 [2]中国科学院长春光学精密机械研究所应用光学国家重点实验室,长春130022

出　　处：《发光学报》1992年第4期304-309,共6页Chinese Journal of Luminescence

摘　　要：用光线追迹迭代法和解析法设计无球差非球面波导短程透镜的母线,用单点金刚石超精加工和凹面波导制备工艺,研制成孔径和有效孔径分别为8和6mm的LiNbO_3导短程透镜.实验表明,器件在有效孔径内无球差;对4mm宽的输入平面波光束,焦点衍射光斑半宽度为4μm;透镜插入损耗为～1dB.Both the ray tracing algorithm and the general solution of geodesic lens were used to design the meridional curves of spherical-aberration-free aspherical lens.The single point diamond machining and a technology for fabricating depression waveguide were used to fabricate the geo- desic lenses in LiNbO3. The lens aperture and effective aperture are 8 and 6mm, respectively. The experiments show that the lens is spherical-aberration-free in the range of 6mm effective aperture, the diffractive spot size is 4UUUUUUUUUUUm for input beam of 4mm width and the lens insertion loss is about 1dB.

关 键 词：非球面透镜 短程 透镜 波导 铌酸锂 

分 类 号：TN256[电子电信—物理电子学]