Some important definitions of terms used in electromagnetic waves.i.e wavelength multiplexing,fresnel reflection, optical dispersion, absorption, scattering, group velocity photon, polarization, wave length λ
Mostly the laser is not used by itself but rather, it is combined with a number of accessories and used as part of larger system. The elaborate systems consisting of lenses, mirrors, prism, computer controllers and a vast array of electromechanical devise such as Q-switches etc.
The CO2 stands for carbon dioxide. In CO2 laser the laser light takes place within the molecules of carbon dioxide rather than within the atoms of a pure gas. Therefore CO2 gas laser is considered the type of molecular gas laser.