Towards an electrically tunable solid state Tera Hertz laser:
Now that would be nice to have :-)
Towards an electrically tunable solid state Tera Hertz laser:
Now that would be nice to have :-)
Tera hertz is such a buzz word... back in the day we just called it the Far-infrared. :^) We used this big old FIR laser that used organic vapors pumped by a big CO2 laser. (hah, you can buy one one ebay... sans the CO2.)
The problem with the Far-IR is that it's darn hard to make good detectors... without very low temperatures. (a 1 mm wavelength has an energy of about 1 meV.) George H.
"...a carefully designed, aperiodic series of quantum wells of various thicknesses made from gallium arsenide and aluminium gallium arsenide, on top of which they deposited a thin gold waveguide (see figure). Above this, they deposited an atomically thin layer of graphene. They made a series of subwavelength slits in the gold waveguide, forcing electrons to tunnel between the quantum wells in the form of plasmons in the graphene. Finally, they deposited a polymer electrolyte, which allowed them to apply a gate potential to the graphene and thereby control the plasmonic wavelengths it supports."
Geez..., sheer geniuses if you ask me. :)
joe
On a sunny day (Fri, 15 Jan 2016 14:54:37 +0000) it happened Joe Hey wrote in :
If you just leave the buzz word 'quantum' out then it is quite understandable, and a plasmon is just a bunch of stuff moving in unison.
I was thinking about ceramic resonators... when Iread that. (SAW filters).
But quantum probably gets them better funded, although that cat is dead.
On Fri, 15 Jan 2016 06:41:17 -0800 (PST), George Herold Gave us:
Now, we study things like the "sea mouse".
On Fri, 15 Jan 2016 14:54:37 +0000, Joe Hey Gave us:
Then they said "No aplaz pleaze..."
On Fri, 15 Jan 2016 15:14:46 GMT, Jan Panteltje Gave us:
Slow light is where it's at, and quantum computer processors are only one result...
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