Ruby remains one of the best Lasers for the removal of tattoos and pigmented lesions. With adjustable spot sizes, treatments are quick and effective. How it Works The Polaris Q-Switched Ruby Laser produces pulses of energy that are very short, but high in energy. The light from the Laser (694nm) is absorbed by the pigment in the tattoo but not the surrounding skin. The pigment heats up and breaks down into smaller particles that the body can dispose of naturally.