多色部分相干光的光谱变化和光谱开关现象研究

摘要

运用部分相干光基础理论和广义衍射理论,从理论上主要研究了多色部分相干光经过多缝系统后的光谱变化和光谱开关现象.讨论了多色完全空间相干光经菲涅耳波带片衍射后,光学奇点附近的光谱变化和光谱开关现象,并且运用Mathcad数值计算软件对光谱变化和光谱开关现象在不同参数下进行研究.根据以上理论和实验研究结果,描述了光谱变化和光谱开关在信息编码和传输中的潜在应用.%By using the fundamental theory of the partially coherent light and the general diffraction theory, the spectral changes and spectral switch phenomenon of multicolor partial coherent light through a multi-slit system are mainly researched theoretically. The spectral changes and spectral switch phenomenon near light singularity of mul?ticolor spatial coherent light diffracted by Fresnel zone plate are discussed. And Mathcad software is used to re?search spectral changes and spectral switch phenomenon of different parameters. According to theory and experi?mental research results, the applications of spectral changes and spectral switch in information encoding and trans?mission are described.