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%.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
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)
