Heat is heat, time is time
It takes both time and temperature (time AT temperature) to "saturate and penetrate" Do the math, no free lunch.
Infra Red "light" is a great way to warm the surface without warming the air between. I am sure a hot box, well insulated, will be more efficient energy wise.
UV lamps can only be harmful. UV "solarizes" plastics, making them old and brittle before their time. Not good from my perspective.
If you get a bunch of IR lamps, you can always raise chickens, ducks and pigs in the off season ;-)
PS a "calrod" water heater element or two would make great IR emitters if powered by Reduced voltage (A 240 V heater element powered at 120V etc)
remember, E=I^2 R
Yep. While it is a cool machine, its benefits are a load of . Unless they are using special UV reactive wax, the same amount of heat will be required to melt and penetrate as with a hot box or iron. The only benefit, if there is one, is that you wont need to heat the whole ski, (binding grease, those pads under the Free Flex bindings etc.) But in doing so I would imagine the heat will need to be much more concentrated and the whole system far less energy efficient.
If they really wanted something precise that would penetrate only so many micros into the base and only heat the wax and nothing else, computer guided laser would be the way to go.