What powers Star Wars blasters?

Answer 1

The laser that is shot out of a blaster is powered by a gaseous substance. It worked by introducing the energy to a medium. Most of the gas that was used was Tibanna Gas. When an atom of the medium was exited by the energy source the electrons that were available would transfer or "jump" to another, higher energy level. When they calmed down and returned to their original energy level a photon was released. The photon is what we would call the "laser beam". And there you have it.