[General] Twisted Vortex LIght

Sat Apr 7 11:34:12 PDT 2018

Hi Wolf,

Sorry for forgetting the paper, here it is

Unfortunately my model is not usable in starved photons regime. 
Intuitively, I would expect a resultsimilarto Tonomura's experiment, but 
to my knowledge a vortex experiment with feeble light remains to be done.

Best Regatds,

Francois

Le 07/04/2018 à 19:27, Wolfgang Baer a écrit :
>
> Francios:
>
> Great pictures. Your paper was not attached only three pictures.
>
> Does your simulation predict the same result for low intensity (1 
> photon) vortexes? I was told the vortex is a bulk phenomena for 
> intense beams.
>
> I agree with your sentiment that our SPIE conference “The nature of 
> light: What are photons?” no longer exists
>
> Thank you
>
> Wolf
>
> Dr. Wolfgang Baer
> Research Director
> Nascent Systems Inc.
> tel/fax 831-659-3120/0432
> E-mailwolf at NascentInc.com
> On 4/7/2018 9:47 AM, Francois Henault wrote:
>>
>> 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
>>>
>>>
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>> -- 
>> __________________________________
>>
>> 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
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-- 
__________________________________

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
__________________________________

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