Stimulated emission involves no novel concepts.An analogy is a harmonic oscillator,for instance a pendulum,which has a sinusoidal force applied on it whose period is the same as its natural period of vibration.If the applied force is exactly in phase with the pendulum swings,the amplitude of the swings increases.This corresponds to stimulated absorption.However,if the force is 180 degree out of phase with the pendulum swings,the amplitude of the swings decreases.This corresponds to stimulated emission.------------ Arthur Beiser.
Posted on: Wed, 29 Jan 2014 05:11:14 +0000
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