准单色光在光学矢量-矩阵乘法器中的传播与光场分布  

Quasi- monochromatic Light Propagation and Optical Field Distribution in Optical Vector Matrix Multiplier

作　　者：周晓霞[1] 张竹娴[1] 杨丞[1] 

机构地区：[1]长沙大学电子信息与电气工程系,湖南长沙410022

出　　处：《长沙大学学报》2016年第2期26-30,共5页Journal of Changsha University

基　　金：国家自然科学基金(批准号:61308005)资助项目;湖南省教育厅一般项目(批准号:15C0126);长沙市科技计划(批准号:K1407008-11)

摘　　要：研究了光学矢量-矩阵乘法器中光波面的调制特性,从柯林斯公式出发,分析了准单色光在乘法器的空间光调制器平面上的光场分布.结果表明,只使用单个光束会引起空间光调制器上单像素可探测的能量较小,容易出现误差,且焦距比较短,工艺设计困难;采用多光束并束不但可以改善均匀性,使得每个像素可探测的能量显著增加,而且可放宽对所需的焦距限制,从而可降低工艺设计的难度.In this paper,using the Collins formula,the modulation properties of the quasi- monochromatic light through an optical vector- matrix multiplier have been studied,and the optical field distributions in the plane of spatial light modulator are analyzed in detail. Results show that single beam design is easy to cause errors,because the energy detected by each pixel on the spatial light modulator is small. And the single beam design requires relatively short focal length,which leads to some design difficulties. By using multi beam design,the uniformity of the light field distribution can be improved,so that the energy detected by each pixel can be much higher. It can also broaden the limit of focal length,which can reduce the difficulty of the process design.

关 键 词：准单色光 柯林斯公式 光学矢量-矩阵乘法器 

分 类 号：TN248.4[电子电信—物理电子学]