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Receiver Antenna for 400~700nm wave
2

Receiver Antenna for 400~700nm wave

Receiver Antenna for 400~700nm wave

(OP)
What size of antenna is ideal for a wave spectrum on the above wave lenght?

RE: Receiver Antenna for 400~700nm wave

The wavelength regime stipulated is visible light, so that would be an optics problem.

Is this for school? Student posting is not allowed.

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Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com: http://www.engineering.com/AskForum/aff/32.aspx

RE: Receiver Antenna for 400~700nm wave

200~350nm, half-wave dipoles.

The day will eventually come when nanotechnology will bring the optical range into the RF world. It should be very interesting when it happens.

RE: Receiver Antenna for 400~700nm wave

See?

That was fast. winky smile

RE: Receiver Antenna for 400~700nm wave

2
Nantennas are being worked on for direct conversion of light into electricity in lue of photovoltaic methods.

An issue which is being conquered is the complex interaction of light with ANY metal surface causing (plasmons) a sort-of plasma cloud which makes direct scaling of radio antenna theory not possible, but they're getting a handle on it. It's similiar to skin depth stuff which doesn't greatly impact RF antennas but does cause strange effects with regards to nano length optical antennas.

Here's a link to short paper on the subject:
antennas for light

Here's a paper. Look at page 444 for some cool optical antennas.(Don't worry its only a 37 page doc not hundreds of pages)
Page 444

Here's a link to lots of stuff at Rochester Univ:
Search of Rochester's data base

Keith Cress
kcress - http://www.flaminsystems.com

RE: Receiver Antenna for 400~700nm wave

I knew it was at the research stage. Of course, 'research stage' is a very long time frame, often spanning decades.

You've provided some excellent references for the OP, if the question was actually intended as written.

RE: Receiver Antenna for 400~700nm wave

(OP)
Wow, I appreciate a great resource you got there. Thank you.
I am looking a possibility,how I could relate the effects to fractal solar panel at iteration where dimensions nearing to or smaller than wavelength. What parameters could have been affected on the energy conversion of light to hv. Fortunately, I have now a supporting references for my hypothesis, thanks to you very much.

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