Rotatum of Light(science.org)
science.org
Rotatum of Light
https://www.science.org/doi/10.1126/sciadv.adr9092
10 comments
Can't extract meaning past the third or fourth line, but just as an idle curiosity: isn't a vortex the product of interaction between the particles? Are photons interacting with each other?
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I can't speak on the subject, but I just want to say I really enjoyed the Star-Trek-esque language (:
Here, we introduce optical rotatum, a behavior of light in which
an optical vortex beam experiences a quadratic chirp in its orbital
angular momentum along the optical path. We show that such an adiabatic
deformation of topology is associated with the accumulation of a Gouy
phase factor, which, in turn, perturbs the propagation constant (spatial
frequency) of the beam.
Try reading any advanced math papers on Arxiv
and you'll be amazed how simple and clear physics papers
are.
I don’t understand any hard math concepts, but usually they are either:
* Somebody’s name or,
* Exactly what they say on the tin
Right? The language of physics has some false-friends in English.
* Somebody’s name or,
* Exactly what they say on the tin
Right? The language of physics has some false-friends in English.
Yeah, the math problem is the other direction -- a thousand things being named after one guy, or a thousand things being named after the simplest English word which could possibly apply.
Still better than computing where everything new thing is named after a generic household item that makes it completely impossible to disambiguate while searching.
Missed opportunity to call it a Rotato instead.
lol
This paper has a pretty similar setup, but adds a spatial light modulator (like a DLP projector that can control phase as well as brightness).
What is wild to me is that the researchers here are able to create a beam where the angular moment changes as you move away.
Plus the really cool spiral patterns.