用二元光学技术制作的双通道Kinoform  

Two-channel Kinoform by Binary Optical Technique

作　　者：韩良恺[1] 沐仁旺[1] 纪宪明[1] 吴国祥[1] 

机构地区：[1]南通师范学院物理系,江苏南通226007

出　　处：《光电子．激光》2004年第1期33-36,共4页Journal of Optoelectronics·Laser

基　　金：江苏省教育厅自然科学基金资助项目(03KJBI40106)

摘　　要：通过对物的频谱加入二次相位因子,使其具有双通道的特性;再采用Gerchberg Saxton(G S)的迭代算法,在物域和频域之间进行多次迭代,使频谱的振幅大致为常数,并对频谱进行量化。用二元光学技术制作了8台阶透射式双通道kinoform,再现时获得了清晰的像,衍射效率较高,达到58.5%。A Kinoform with the characters of two-channel was fabricated by adding quadratic phase factors into conjugate frequency spectrum of object. Gerchberg-Saxton (G-S) iterative algorithm was adopted, while keeping the amplitude of frequency spectrum approximately to be constant. The phase of the spectrum was quantified into eight levels. An eight-phase-level Kinoform was fabricated by using the binary optical technique. The reconstructed images are clear and efficiency of the diffraction is 58.5%.

关 键 词：二元光学技术 KINOFORM 迭代算法 相息图 双通道原理 

分 类 号：O438.1[机械工程—光学工程] TB877[理学—光学]