Polariton Laser (Well, r = P?)

[Teej]

These use ~ 1/250 of the power of the most efficient current lasers, use electrical current INSTEAD OF LIGHT, but work at room temperature too.


Polariton lasers don't stimulate radiation emission. They stimulate scattering of polaritons.



A new way to make laser-like beams using 250x less power (Correction)



:drool:


It would be interesting if they can get this sort of thing to a production practical standpoint.

 

[Mattronium]

I believe that was already posted (Here).

 

[Teej]

I believe that was already posted (Here).

This is a correction to that one actually (It says CORRECTION in the link too)

The initial post apparently didn't explain the efficiency the way the author intended.

 

[Mattronium]

Ahh, OK.
So are they going to call this a LASSP (Light Amplification by Stimulate Scattering of Polaritons) or are they going to correctly use oscillation instead of amplification, which would make it a LOSSP (Light Oscillation by Stimulate Scattering of Polaritons.)?

If someone could shed some light on what a polariton is, I'd appreciate that. Wikipedia says " polaritons are quasiparticles resulting from strong coupling of electromagnetic waves with an electric or magnetic dipole-carrying excitation." still a little hard to understand thought.

I wonder how well they can scale it up in power? (I also wonder what exact wavelength it is, they just said ultraviolet:thinking

 

[Teej]

Ahh, OK.
So are they going to call this a LASSP (Light Amplification by Stimulate Scattering of Polaritons) or are they going to correctly use oscillation instead of amplification, which would make it a LOSSP (Light Oscillation by Stimulate Scattering of Polaritons.)?

If someone could shed some light on what a polariton is, I'd appreciate that. Wikipedia says " polaritons are quasiparticles resulting from strong coupling of electromagnetic waves with an electric or magnetic dipole-carrying excitation." still a little hard to understand thought.

I wonder how well they can scale it up in power? (I also wonder what exact wavelength it is, they just said ultraviolet:thinking

Yeah, its heady stuff.

They mention that, technically, its not a laser...but, as the acronym has evolved into a word, its used in the sense of the word.

A new acronym would be more appropriate of course.


I think of the polariton as sort of a photon with a hole that wants an electron attached to an electron. (A photon with an exciton)

So the overall charge acts positive, as overall, it wants an electron.

That's why they don't need the population inversion, etc...the energy required to get the electron to pop into the hole and back out is very small.

That's why the process is less energy intensive...a little current will do it. Too much is actually more of a problem, as it can make too much light or break down that electron/no electron part of the polariton (It's exciton).