[General] Twisted Vortex LIght
Francois Henault
francois.henault at univ-grenoble-alpes.fr
Sat Apr 7 09:47:25 PDT 2018
Dear Wolf and All,
Vortices are a quite fascinating subject for optical engineers. I
recently published a paper (attached to this mail) about tailoring
wavefronts in order to generate null irradiance along the optical axis
of a system. This is a pure wave optics approach, light quanta are not
needed.
The question of their effect on Young’s fringes is very interesting. I
performed quick simulations with my own wave optics model that produce
the attached images. You should see:
1 - Usual Young’s fringes
2 - Young’s fringes with similar vortex beams of both holes. Fringes
themselves are unchanged, only their luminous envelope is modified
3 – Same as 2, but adding a Pi phase-shift at one of the two holes.
Forked fringes are appearing, which is in agreement with the (many)
existing experimental results and literature.
I take this opportunity to regret that our SPIE conference “The nature
of light: What are photons?” no longer exists, because I would certainly
have submitted a communication on that topic. Chandra, is there a chance
that this conference returns in 2019 ?
Best Regards,
Francois
Le 07/04/2018 à 01:56, Wolfgang Baer a écrit :
>
> to All
>
> I was just at the TSC conference where twisted light creating vertexes
> was proposed for penetrating tissue
>
> The pictures presented clearly showed light beams with doughnut shaped
> propagation wave fronts.
>
> https://physics.aps.org/articles/v9/105
>
> https://www.ncbi.nlm.nih.gov/pubmed/28964247
>
> I asked the presenter if double slit experiments or single photon
> experiments had been done with these light forms. Apparently the
> angular momentum of light is theoretically found when solving
> Maxwell's equations in cylindrical coordinates , but currently uses
> are for intense beams, but there is no obvious reason low intensity
> beams could not show the same phenomena.
>
> The question of the wave front size of light came up and it was agreed
> that this was an open question. I know in our group we have discussed
> whether the wave front is contained in the apparatus and thereby the
> properties of photons cannot be separated from the propagation
> environment boundary conditions.
>
> Could gravity also form vortecies? Even more intriguing could a
> vombination of gravitational and electric fields produce vortecies?
>
> Anyone know more about this?
>
> Wolf
>
> Dr. Wolfgang Baer
> Research Director
> Nascent Systems Inc.
> tel/fax 831-659-3120/0432
> E-mailwolf at NascentInc.com
>
>
> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
> Garanti sans virus. www.avg.com
> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
>
>
> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>
>
> _______________________________________________
> If you no longer wish to receive communication from the Nature of Light and Particles General Discussion List at francois.henault at univ-grenoble-alpes.fr
> <a href="http://lists.natureoflightandparticles.org/options.cgi/general-natureoflightandparticles.org/francois.henault%40univ-grenoble-alpes.fr?unsub=1&unsubconfirm=1">
> Click here to unsubscribe
> </a>
--
__________________________________
François Hénault
Ingénieur de Recherche
Institut de Planétologie et d’Astrophysique de Grenoble (IPAG)
UMR CNRS 5274
Bâtiment OSUG-A, Porte 65
414, Rue de la Piscine
Université Grenoble-Alpes - B.P.53
F-38041 Grenoble Cedex 9
Tel: +33 (0)4 76 63 57 78
__________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.natureoflightandparticles.org/pipermail/general-natureoflightandparticles.org/attachments/20180407/3d194fe5/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: young.bmp
Type: image/bmp
Size: 66614 bytes
Desc: not available
URL: <http://lists.natureoflightandparticles.org/pipermail/general-natureoflightandparticles.org/attachments/20180407/3d194fe5/attachment.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: vortex.bmp
Type: image/bmp
Size: 66614 bytes
Desc: not available
URL: <http://lists.natureoflightandparticles.org/pipermail/general-natureoflightandparticles.org/attachments/20180407/3d194fe5/attachment-0001.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: vortex_pi.bmp
Type: image/bmp
Size: 66614 bytes
Desc: not available
URL: <http://lists.natureoflightandparticles.org/pipermail/general-natureoflightandparticles.org/attachments/20180407/3d194fe5/attachment-0002.bin>
More information about the General
mailing list