设计参数变化对衍射微透镜的影响  

Effect of changing design parameters on diffractive microlens

作　　者：刘玉玲[1] 卢振武[1] 孙强[1] 

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

出　　处：《红外与激光工程》2004年第4期414-417,共4页Infrared and Laser Engineering

基　　金：中国科学院创新课题资助项目(2002LQ.04)

摘　　要：给出了多台阶衍射微透镜的设计公式,并阐述了旋转体时域有限差分法。通过采用该方法对设计的多台阶衍射微透镜进行分析,说明了设计参数(包括焦距、入射波长、透镜材料折射率)的变化与微透镜衍射效率、爱里斑半径、最大场强变化的关系,对部分结果的定性讨论与数值分析结果一致。The designing formula of multilevel diffractive microlenses is presented. Body-of-revolutionary finite-difference time-domain method (BOR FDTD) is illustrated. The multilevel diffractive microlenses are analyzed by use of BOR FDTD. The effects of changing design parameters (including focal length, incident wavelength, refractive index of microlens material) on multilevel diffractive microlens are investigated. The results show that changing design parameters have effects on diffractive efficiency, airy diffraction disc radius and maximum electric magnitude of microlens. The qualitative analyses of microlenses are consistence with some of numerical results.

关 键 词：衍射 微透镜 时域有限差分法 

分 类 号：O436.1[机械工程—光学工程]