Fan Junqing, Xu Chengjie, Lu Ping, Wang Xianxiu, Li Gongyu, Ma Wensheng, Han Yongjiu, Wang Xiuwen. STUDY OF SPHERICAL-ABERRATION-FREE ASPHERICAL GEODESIC LENSES[J]. Chinese Journal of Luminescence, 1992,13(4): 304-309
Fan Junqing, Xu Chengjie, Lu Ping, Wang Xianxiu, Li Gongyu, Ma Wensheng, Han Yongjiu, Wang Xiuwen. STUDY OF SPHERICAL-ABERRATION-FREE ASPHERICAL GEODESIC LENSES[J]. Chinese Journal of Luminescence, 1992,13(4): 304-309DOI:
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 LiNbO
3
. 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 4μm for input beam of 4mm width and the lens insertion loss is about 1dB.