LASER

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Definition of LASER

The LASER works on the principle of stimulated emission of radiation. Thus, it is called Light Amplification by Stimulated Emission of Radiation. The stimulated emission is the emission of the photon by striking the atom with the similar photon.

LED and its symbol

If electrical energy is supplied to the electron at the lower energy level, it will jump from valence band to conduction band absorbing the additional energy supplied to it. This process is called Absorption.

LED and Laser difference

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