help - subluminal light propagation

Reply Wed 6 Sep, 2006 09:24 am
hi friends,
am to present an introductory seminar on subluminal light propagation - snail paced light.i'll be gald to know abt some useful links to it.
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Reply Fri 8 Sep, 2006 08:53 am
I'm also interested in this as well. I'm specifically curious about the mass and energy at this low speed.
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g day
Reply Tue 12 Sep, 2006 04:14 am

In Australia yesterday the Financial Review posted an article on developments in this field, lead by a Professor Ben Eggleton at Sydney University and a program called CUDOS.

Apparently this professor has a way of slowing light right down in a way that doesn't degrade the signal in the slighest - a major breakthrough.




Google "Slow light CUDOS and Sydney University Physics" for lotsa links

I think you'll find the underlying method is althought light or electricity carriers move at lightspeed , a signal has a wave front that moves at a slightly slower rate due to collisions, absorption and re-emition of a carrier. For electricity in a non super conductor the signal front can move at 1/10th of lightspeed, even though each individual electron is moving at much higher rates. I guess researchers are trying to produce all digital, optical carriers that can slow light down where they have to (read lotsa collisions) to get a really good signal to noise ratio.
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Marco Lazzeri
Reply Fri 15 Sep, 2006 07:28 am
that was a valuable link.thanx g_day Smile
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