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Absorption in Laser Optics

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Absorption in Laser Optics

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Lasers can be absorbed inside an optical substrate through several different methods. Electrons in discrete energy levels of the atoms that make up the optical medium absorb radiative photons and are pushed to semi-stable, higher energy levels. These atoms then fluoresce and emit radiation (photons) through spontaneous emission when electrons fall back to a lower energy level. Unintentional fluorescence causes loss of energy and interference with signal detection, which can be detrimental in laser optics applications.

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