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wolberine
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bigSteve
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 Posted: Mon Jun 25, 2012 9:22 pm Post subject: |
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| How do they know they aren't just decomposing the wave into two orthogonal polarizations? If they can do it with maybe 10 channels, same frequency, etc I might be less skeptical. |
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SM2IUF
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Joined: 08 Jun 2012
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Location: Kalix, Sweden
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| Posted: Wed Jul 04, 2012 7:12 am Post subject: Re: Orbital Angular Momentum |
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Please correct me if I am misunderstanding the article but my understanding is that they start with a linearly polarized beam and by reflecting the beam via a twisted metallic surface the end result is supposed to be an OAM wave. |
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SM2IUF
Antenna-Theory.com Newbie
Joined: 08 Jun 2012
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Location: Kalix, Sweden
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| Posted: Fri Jul 06, 2012 10:23 am Post subject: Re: Orbital Angular Momentum |
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| SM2IUF wrote: |
Please correct me if I am misunderstanding the article but my understanding is that they start with a linearly polarized beam and by reflecting the beam via a twisted metallic surface the end result is supposed to be an OAM wave. |
Well it seems my understanding of the experiment is correct. I have found a few more interesting articles on the Internet that can shed more light into these OAM waves.
First http://www.physicstoday.org/resource/1/phtoad/v65/i6/p18_s1 about an experiment with acoustic waves and OAM where they made an ultrasound transducer that produced OAM waves and could actually see that these waves made a disk spin due to the momentum from the OAM wave. Really fascinating.
Also http://www.physicstoday.org/resource/1/phtoad/v57/i5/p35_s1 is of great interest.
It will be interesting to see what practical impact the OAM waves might have outside the academical world. |
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