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Originally posted by Phage
reply to post by XPLodER
You have it more or less correct but your biggest problem lies with comparing heliospheres to atoms and the galaxy to a gas tube.
Heliospheres are not atoms, they don't behave according to the rules of quantum mechanics. They don't have discrete energy states. They are not subject to stimulated (or spontaneous) emission of radiation.
A galaxy is thousands of light years thick. Even if there were some sort of stimulated emission possible from a heliosphere, it would take thousands of years for each "bounce" of the light. The heliospheres would return to their ground state spontaneously. Population inversion could not occur. The density is not high enough. There could be no lasing.
The galaxy, dubbed Speca by the researchers, is only the second spiral, as opposed to elliptical, galaxy known to produce large, powerful jets of subatomic particles moving at nearly the speed of light. It also is one of only two galaxies to show that such activity occurred in three separate episodes.
Small scale analogs of giant reflector telescopes, these proposed ceramic lasers would convert an impressive 35 percent of the Sun's energy into a laser light, providing a considerable increase in the maximum power produced by current-day solar pumped lasers, which typically achieve only a 1-2 percent efficiency.
As outlined in the AIP's Journal of Renewable and Sustainable Energy, the new solar lasers would concentrate light with a small parabolic mirror 1 meter in diameter that has a focal spot approximately 2-3 centimeters in diameter. The concentrated light would then strike a two-layer ceramic disk known as a Neodymium and Chromium co-doped YAG (yttrium aluminum garnet) laser material.
One side of the disk would have a highly reflective coating; the other side would be anti-reflecting. When sunlight penetrates through the ceramic material, it excites the electrons in the material, causing them to emit laser light of a specific wavelength (1.06 micrometers). To control the searing heat produced by the concentrated sunlight, the ceramic disk would be mounted atop a heat sink through which water would be pumped.