杨氏双缝干涉实验中光谱奇异现象的特性分析

研究了完全相干光和部分相干光分别照射双缝时,杨氏双缝干涉实验中干涉场区的光谱变化现象.根据干涉场中光谱标准矩定义了光谱的相对光谱移动和相对光谱增宽,并利用相对光谱位移和相对光谱增宽分析了光谱奇异现象的特性.研究结果表明,入射光的某些光谱参量（如源光谱宽度Γ0,中心拦截比ε,相对空间相干度Δ0）对相对光谱增宽的影响相当大.结果还表明了光谱标准矩方法是定量研究光在传输中的光谱变化以及光谱奇异现象的有效工具.

Analytical Characterization of Spectral Anomalies in Young's Double-Slit Interference Experiment

Spectral anomalies in Young′s double-slit interference experiment illuminated by completely coherent light and partially coherent light,respectively,was investigated.The relative spectral shift and relative spectral broadening in the interference field were defined based on the standardized moments of the power spectrum.Furthermore the characterization of spectral anomalies was analyzed by relative spectral shift and relative spectral broadening.The research results show that some parameters of the incident light (i.e. spectral width Γ0,central obstruction ratio ε,relative coherence Δ0) influence the relative spectral broadening remarkably.And also the standardized moments of the power spectrum provide an effective tool for studying the spectral changes and spectral anomalies of light on propagation.