WHAT IS A LASER?
The word laser is an acronym in English for light amplification by stimulated emission of radiation.
A laser is a device consisting of a solid, liquid or gas medium inside a cavity limited by two parallel mirrors, one of which is semitransparent. If the atoms of that medium are stimulated, they reach an unstable level of energy and in order for them to return to their initial state they release that energy in the form of photons. Part of that light bounces to the outside through a semitransparent mirror in the form of pulses or a continuous beam.
Thus, a laser produces a beam of bright, monochromatic, collimated controllable light which enables the delivery of a large quantity of energy into one of the pigments in the skin.
