Optical Resonator System in Laser

An optical resonator is a system or set up, which is used to obtain amplification of stimulated photons by oscillating them back and forth between system of two mirrors. Thus, it consists of two plane or Continue reading “Optical Resonator System in Laser”

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Components of a Laser

Three main components of laser device are:

a)      Active medium:

For example in ruby laser, the active medium is aluminum oxide doped with .05 percent of chromium ions.

In helium -neon laser it is the combination of helium and neon in the ratio of 10 :1.

b)      Pumping source:

For example in ruby laser, the pumping source is optical pumping that is helical xenon flash tube.

In helium-neon laser, electrical pumping that is electric discharge is used for stimulated absorption.

c)      Optical resonator system:

In most of the systems, it consists of system of two mirrors. On mirror is fully reflective and other is partially reflective.

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