Towards an electrically tunable solid state Tera Hertz laser

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...