Rami Arieli: "The
Laser Adventure" Chapter 1.1 page 1
electromagnetic radiation out of the laser can be in any part of the spectrum,
including the visible
spectrum, the Ultra-Violet
(UV) spectrum, the Infra-Red
(IR) spectrum, and beyond.
In the following pages the properties
of electromagnetic radiation is briefly described:
Radiation in vacuum.
Radiation in Matter.