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Science Experiments / Re: Investigation on diffraction of light
« Last post by hamdani yusuf on Today at 15:15:58 »Fraunhofer Diffraction Explained
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In this video, I describe the process of Fraunhofer diffraction (also known as far-field diffraction) in terms of the Fourier Transform and Fourier Optics. I go over the assumptions that underlie Fraunhoffer diffraction (both the paraxial approximation and the small-aperture approximation), and give the mathematical form that it takes.
This is part of my graduate series on optoelectronics / photonics, and is based primarily on Coldren's book on Lasers as well as graduate-level coursework I have taken in the EECS department at UC Berkeley.
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In this video, I go over one-dimensional single-slit Fraunhofer diffraction. I walk through the mathematics using the Fourier Transform to calculate the intensity at a screen a distance d away, as a function of the screen coordinates.You can have a perfectly valid mathematical model. But to be useful, it should reproduce observed experimental results without excessive ad hoc assumptions.