Ellipsometry: A Basic Principle by 3D Animations

This video explains the basic principle of ellipsometry in a simple way based on 3D animations. In this video, optical constants, light polarization, light reflection, and the fundamental principle of ellipsometry are explained. For further reference, you can refer to a book of "Spectroscopic Ellipsometry: Principles and Applications" by Hiroyuki Fujiwara (Wiley, 2007):
www.wiley.com/en-us/Spectrosc...
0:00 Introduction
0:35 Optical constants
2:39 Polarization of light
4:30 Light reflection
5:21 Ellipsometry

[@lostandfound4421]

Thank you for a great lecture! Animations are amazing and intuitive. ありがとうございます。
A quick question, professor.
In the chapter "Optical constants"(1:11) it was explained that the n value is related to the wavelength(λ) and the extinction coefficient(k) is to amplitude.
But in the chapter "Ellipsometry"(7:12), the single variable test, instead, shows that the changes in the n value result in the amplitude of the reflected wave,
and the k value change leads to the change of the phase of the reflected wave, which is a quite opposite concept that I've understood from the former chapter.
I think I understood wrong somewhere. Where did I get it wrong?
I'll really appreciate it if you could let me know, or recommend some other studying materials or related papers.

[@Hiroyuki-Fujiwara]

Thank you very much for your good question! The important point is that, in ellipsometry, only the relative values of p- and s-polarizations are characterized. The increase in n leads to the relative amplitude change mainly because the amplitude of p-polarization decreases, which can be related to light refraction properties of materials [please see Fig. 2.19 in “Spectroscopic Ellipsometry: Principles and Applications” (Wiley, 2007) for further understanding]. For the change of delta with k, unfortunately, there is no intuitive way to explain the phase lag between p- and s-polarizations.

[@alejandrogomezhuertas5298]

Hi, I was reading your question, and I think I have an answer for it. In (1:11), we are talking about n and k as the electric field component enters (the wave is refracted) into a material with an index of refraction n. In the minute (7:12), the electric field does not enter the material (the wave is reflected), leading to the different behavior of the electric field components, which is explained as the phase difference between X and Y electric field components. Both, reflection and refraction are different concepts and have different effects on the behavior of the wave.

[@atefeh1123]

Please continue Dr. Fujiwara. To be honest your explanation was the best and detailed without adding unnecessary complicated details I could find. You did really great job. I am looking forward to learning more from you

[@forZeKir]

Thanks for great explanation, Doc.

[@plh8219]

Thanks a lot Prof. Hiroyuki Fujiwara! Very nice lecture.

[@andyalice6673]

Thanks Prof Fujiwara. Quite vivid 3D animations.

[@bhavanavalaboju6098]

Thank you for great explanation and clear animation.

[@phy_dude]

Such a helpful video ! Keep up the good work

[@englishforfunandcompetitio248]

You're very articulate and your video is vivid professor. I learned a lot from this video. Hence subscribed and bell pressed for future notifications. Break a leg!

[@adityabhardwaj8128]

great explanation !!

[@hugogong5627]

This guy is spreading knowledge in a Japanese manner. I like it. Keep going!

[@kurosawa098]

This guy is spreading knowledge - period. I like it. Keep going!

[@WestonBai]

Very easy to understand， I relly appreciate it

[@FatinSadab1997]

Decent work !

[@user-qm4uu5ht6v]

best lecture ever

[@zaidinajah8741]

What is this great Video, Really thank you Sir

[@mohammedrazooqi9643]

Very nice.
Thank you

[@f7dvic812]

I absolutely love it

[@alexoddo9001]

Excellent! Make more videos on other topics of your expertise.

[@mahmoudsalman7676]

great video

[@sedratihichem8754]

SPECIAL THANKS PROF

[@rimaseul2585]

Thanks🙏

[@karlamoya9253]

Geniousss❤❤❤

[@seok-kyunhan5131]

Thanks, I don't quite understand it, but I think I know a little bit about polarization, which has been difficult for me.

[@tanyamoussa2330]

I wish I watched this during my university years