Rotated Waveplates and Jones Matrix

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5 жыл бұрын

/ edmundsj
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While quarter and half-waveplates are neat by themselves, their real power comes about when you rotate them. This is what enables the transformation of linearly polarized light to circularly polarized light and back again, and allows you to swap the components of polarization of an electromagnetic wave.
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.

Пікірлер: 24

@Authorite100 4 жыл бұрын

I just want to utilize the measure into proverb how extraordinary these lectures are.

@glenyeldho5782 5 жыл бұрын

This Channel is a Gem! Crystal clear explanation about the topic I found your other videos and it helped me a lot especially semiconductor Physics section! Keep making more videos Subscribers and views will follow. I would definitely recommend to everyone

@lLaurnssl 4 жыл бұрын

Those were great series! I recommended your channel to my physics course

@jimmyleo4718 4 жыл бұрын

Thanks man. You explain much better than my lecturer. It is worth to watch for several times to get better understanding.

@meetoptics 2 жыл бұрын

It is a great explanation! definitely

@xenusonofzarnox 4 жыл бұрын

Excellent Mr. Edmunds, thank you very much.

@zayver06 2 жыл бұрын

It is so well explaned ! Thank you very much for your videos !

@manujsharma1432 Жыл бұрын

Thank you for such a nice explanation....

@user-pi4hq6py7g Жыл бұрын

It’s easy to understand. Thanks！

@michealmcneil1144 3 жыл бұрын

Thank you so much sir, you saved my engineering optics

@meetoptics 2 жыл бұрын

That's great! Congrats

@user-zr7sg1xf3z Жыл бұрын

This is awesome

@shivamagarwal9084 4 жыл бұрын

could you plz mention the matrix for quarter wave plate rotation

@emilywong4601 9 ай бұрын

Walter Levin had a problem (183)involving polarized waves,

@brendawilliams8062 3 жыл бұрын

Thx

@vidhisingla5406 2 жыл бұрын

Hi! Great videos! I watched all of them multiple times. I do have a question though and I am not able to figure out the factor 1/sqrt2 in the matrix for the QWP. I tried solving and the matrix o got has a factor of 1/2. So, we are considering the angle to be 45 degrees and in the matrix both Cos theta and Sin theta are either squared or multiplied by each other which would result in 1/sqrt2 * 1/sqrt2 = 1/2. Please help me!

@JordanEdmundsEECS 2 жыл бұрын

Good question. In the Jones calculus, the quantities aren’t squared because we work directly with electric fields, not optical intensities. If you want intensity, you will square it.

@smitthummar6839 5 жыл бұрын

Sir please make thermal equilibrium lecture

@williamgriffiths2661 2 жыл бұрын

Unless I've missed something, I think your inclusion of 1/rt2 for the quarter WP at 45 degrees is incorrect. You drop it when putting x and y pol light through it. You shouldn't get (1,i) for x pol, you should get (1/rt2, i/rt2)...but I could have missed something.

@sotiriss.93 3 жыл бұрын

Hello. Thank you very much for the lessons. They are very helpful for me. I have a question. I read that the Jones matrix of a quarter-waveplate with a rotation angle a is: [ 1/sqrt(2)] * [ 1-jcosa - jsina ] | | [ -jsina 1+jcosa ] Can you explain why please?Thanks again :)

@JordanEdmundsEECS 3 жыл бұрын

Sure, this is just expanding the e^ja in terms of sines and cosines. Unfortunately there's conflicting conventions depending on whether you take waves to be e^jkz or e^-jkz, optics people have not decided one way or the other.