Fresnel Diffraction Explained

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In this video, I go over the Fresnel diffraction integral, how to arrive at it, and how to put this integral into a more interesting form using convolution. I also briefly describe the concept of an optical transfer function, and figure out what this is for free-space propagation.

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.

Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.

[FDND-plwp]

God bless you sir!! I am trying to understand the course I took and your clear and short videos are helping me more than anything else. Please continue your amazing work.

[ramjad]

Awesome lecture! This helped me make more sense of my lecture notes

[GeoffryGifari]

For diffraction of light, does the "thickness" of the aperture matter? Lets say that the aperture is a circular hole on a plank of wood, and that plank of wood has a thickness on the order of the hole diameter. What would the effect be? What if we choose a different plank of wood with different thickness?

[Pastisas]

great videos!
I'm currently working on a problem where laser light diffracts inside of glass sheet of 1mm thick (d) and leaves diffraction patterned damages on the other side of the glass. These damages are 1mm, 2, 7mm and 4, 5mm distance from the center (Xs). laser beam diameter is 30 microns (a). So i cant use Fresnel nor Fraunhofer diffraction to model whats happening because my diffraction angle is very big ( xs > d). Do you have any advice or insights?

[戴汉森]

have a more learn about Fresnel Transform, thank you

[omkarshinde]

can you please make a breif vedio on this topic overall . I dont understand derivation but a theory or animation diagram might help for all. Also there are no other vedios on ytube currently that touch this topic with your perspective. plsss:(

[haniefsofi]

You don't have LECTURING SKILLS. It is very haphazard.