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Terahertz radiation from air plasma induced by femtosecond laser pulses

Audience:

This video schematically shows the technique of terahertz radiation generation in air plasma by two-color femtosecond laser pulses. It also shows the X-wave influence on the conical terahertz radiation formation that was presented in this article: https://doi.org/10.1103/PhysRevA.105.023521 Soundtrack: "Over Time" by Audionautix is licensed under a Creative Commons Attribution-ShareAlike License 4.0. https://creativecommons.org/licenses/by/4.0/ Artist: http://audionautix.com/

Analytics

3 Overall score*

175 Rank

9 Votes

6 Comments

Comments

Motivation is unclear. Why should I care about terahertz radiation and femtosecond lasers? What’s difficult about this project? I’m a physicist, but I’m not an expert in your field, so I don’t know what it’s all about.

You use a lot of unexplained technical terms, which is fair, since you seem to address an advanced audience. On the other hand, I find it difficult to follow the video, since it is only text and no voice. While I read your explanations, I couldn’t focus on your nice visualisations, which is a bit sad.

From my point of view, the background music is too loud and too spirited. I would have preferred something a bit more quiet and calming. I had trouble focussing on your video.

All in all it was a nice topic, but I had no real takeaway from it.

It is a nice way of visualizing a technical paper but I think that the video alone is not enough to understand the subject. The main issue is the absence of voice that could add the context and explanations necessarily to understand.

The animations are great! The absence of audio for the explanations is perfectly fine, but for this reason I think the video works best for an audience already familiar with the topic, or at least for those who have read the article.

1.9

There’s not much of an exposition as to the problem setting or where the problem is going.

2.9

The lack of narration can be a significant detractor.

5.2

The video covered a very interesting topic, but I didn’t really understand the significance of it. Also, the math was quite captivating as it matched the images generated by experimentation/simulation. However, I was unsure what some of the terms meant. If the example with the 400nm wavelength example was used as an example to fill out and solve for the necessary variables, that would help me understand. Further, at around 3:30, the ((omega-omega_0)/(k_0)(theta^2)/2 term is missing. Is that just too small to be considered negligible? Good video with matching visuals, but it feels held back without narration as a narrator could really help with an explanation for some parts.