Mielenz Klaus D
Alpine Lake Resort, Terra Alta, WV 26764-0402.
J Res Natl Inst Stand Technol. 1993 Mar-Apr;98(2):231-240. doi: 10.6028/jres.098.018.
This paper attempts to reconcile conflicting points of view of laboratory physicists and coherence theorists on correlation-induced spectral changes arising from the partial coherence of primary and secondary light sources. It is shown that, under normal laboratory conditions and in the Fraunhofer approximation, the directional spectrum of light does not change on propagation in free space, and that each frequency component of the total spectrum is preserved in accordance with the principle of energy conservation. It is demonstrated, and illustrated by examples, that descriptions of diffraction by the theory of partial coherence and by classical wave optics are fully equivalent for incoherent primary sources. A statistical approach is essential, and coherence theory is required, for partially coherent primary sources.
本文试图调和实验室物理学家与相干理论学家在由一次和二次光源的部分相干性引起的关联诱导光谱变化问题上的冲突观点。结果表明，在正常实验室条件下以及在夫琅禾费近似中，光的方向光谱在自由空间传播时不会改变，并且总光谱的每个频率分量都根据能量守恒原理得以保留。通过示例证明并说明，对于非相干一次光源，部分相干理论和经典波动光学对衍射的描述是完全等效的。对于部分相干一次光源，统计方法是必不可少的，并且需要相干理论。
