How the Helium-Neon Laser Works? - Stony Brook University ..
How the Helium-Neon Laser Works? There are three principal elements of a laser, which are (1) an energy pump, (2) an optical gain medium, and (3) an optical resonator.. These three elements are described in detail below for the case of the HeNe laser .. (1) Energy pump.. A 1400 V high voltage, DC power supply maintains a glow discharge or plasma ..