Photon amplification is a process where the number of photons is increased, typically through stimulated emission, resulting in a more intense light beam. This principle is fundamental to the operation of lasers, where coherent light is produced by amplifying photons within a resonant optical cavity.

Photon Amplification

Photon amplification

number of photons

Stimulated emission is a process where an incoming photon induces an excited electron to drop to a lower energy level, emitting a second photon with the same phase, frequency, polarization, and direction as the incoming photon. This principle is fundamental to the operation of lasers, where it leads to the amplification of light.

stimulated emission

intense light beam

Fundamental Principle

operation of lasers

Coherent light is a type of light in which the waves maintain a constant phase relationship, allowing them to interfere constructively or destructively. This property is essential for applications like lasers, holography, and optical communications, where precise control over light is required.

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