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Old 03-05-2015, 07:41 PM #1
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Talking Polariton Laser (Well, r = P?)

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)






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



Last edited by Teej; 03-05-2015 at 07:58 PM.
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Old 03-06-2015, 12:25 AM #2
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Default Re: Polariton Laser (Well, r = P?)

I believe that was already posted (Here).
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Old 03-06-2015, 11:38 AM #3
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Talking Re: Polariton Laser (Well, r = P?)

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Originally Posted by Mattronium View Post
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.

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Old 03-06-2015, 01:06 PM #4
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Default Re: Polariton Laser (Well, r = P?)

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)
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Laser Safety Information

Mattronium's Laser Collection (with links to build threads etc.)

Noteworthy Lasers and λ's:
685nm: 24mW pointer pen
660nm: 230mW LPC-826
647.1nm: Omnichrome 643 Ar/Kr ion 5-line max (high hours)
638nm: 600mW Kryton Groove
635nm: 5.8mW DIY pointer pen 0.6mrad
632.8nm: 20mW HeNe SP-107 - 6mW Hughes 3225H-C made in 1980.
594.1nm: 4.1mW Coherent HeNe from Sigurthr - 1.7mW HeNe REO-LHYR-0050M
568.2nm: Ar/Kr
543.5nm: 3.1mW Coherent HeNe
537nm / 542nm / 545nm / 550nm multi-line DPSS +/- 1nm
532nm: 500mw CNI PGL-III-C
515nm: 36mW laserBtB
514.5nm/501.7nm/496.5nm /488.0nm/476.5nm/457.9nm 2214-40MLA Argon Ion
462nm: 2W M462 Kryton Groove
450nm: 94mW laserBtB
445nm: 2.5W NDB7875 Kryton Groove - 40mW Pen laser using NDB7242E diode
405nm: 100mW PHR-805T

Building: 337.1nm: TEA laser

"Fiat Lux" - preferably laser light.

Last edited by Mattronium; 03-06-2015 at 01:07 PM.
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Old 03-06-2015, 02:09 PM #5
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Talking Re: Polariton Laser (Well, r = P?)

Quote:
Originally Posted by Mattronium View Post
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)
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).
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