Fraunhofer diffraction (mathematics) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-07

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Fraunhofer_diffraction_equation


00:00:36 1 Definition
00:01:13 1.1 In Cartesian co-ordinates
00:03:21 1.2 In polar co-ordinates
00:05:12 2 Example
00:05:49 2.1 Slit of infinite depth
00:06:26 3 Apertures
00:08:16 3.1 Rectangular aperture
00:08:34 3.2 Circular aperture
00:09:48 3.2.1 Form of the diffraction pattern
00:11:57 3.3 Aperture with a Gaussian profile
00:12:33 4 Slits
00:14:05 4.1 Two slits
00:14:24 4.1.1 Narrow slits
00:15:00 4.2 Slits of finite width
00:16:51 5 Gratings
00:19:55 5.1 Narrow slit grating
00:20:32 5.2 Finite width slit grating
00:22:59 5.3 Other gratings
00:25:08 6 Extensions
00:25:45 6.1 Non-normal illumination
00:26:03 6.2 Non-monochromatic illumination
00:26:58 7 See also
00:27:35 8 References



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SUMMARY
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In optics, the Fraunhofer diffraction equation is used to model the diffraction of waves when the diffraction pattern is viewed at a long distance from the diffracting object, and also when it is viewed at the focal plane of an imaging lens.The equation was named in honour of Joseph von Fraunhofer although he was not actually involved in the development of the theory.This article gives the equation in various mathematical forms, and provides detailed calculations of the Fraunhofer diffraction pattern for several different forms of diffracting apertures, specially for normally incident monochromatic plane wave. A qualitative discussion of Fraunhofer diffraction can be found elsewhere.