DIFFRACTION AND FOURIER OPTICS Rice （傅里叶光学衍射和大米）.pdf

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DIFFRACTION AND FOURIER OPTICS Rice （傅里叶光学衍射和大米）.pdf

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DIFFRACTION AND FOURIER OPTICS Rice （傅里叶光学衍射和大米）

Rice University Physics 332 DIFFRACTION AND FOURIER OPTICS I. Introduction II. Theoretical considerations III. Measurements IV. Analysis Revised July 2011 I. Introduction In this experiment, you will first examine some of the main features of the Huygens-Fresnel scalar theory of optical diffraction. This theory approximates the vector electric and magnetic fields with a single scalar function, and adopts a simplified representation of the interaction of an electromagnetic wave with matter. As you will see, the model accounts for a number of optical phenomena rather well. If one accepts the Huygens-Fresnel theory, it becomes possible to manipulate images by altering their spatial frequency spectrum in much the same way that electronic circuits manipulate sound by altering the temporal frequency spectrum. In the second part of the experiment, you