Science glossary film: Laser

Laser

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A laser is a type of optical amplifier that produces light within a very narrow frequency band, and with the peaks and troughs of their electromagnetic waves more or less in step.

A laser is a type of optical amplifier that produces light within a very narrow frequency band. ... and with the peaks and troughs of their electromagnetic waves more or less in step. The coherence of their light is what makes lasers so useful, especially for encoding data. The name is derived from "Light Amplification by Stimulated Emission of Radiation."

... and with the peaks and troughs of their electromagnetic waves more or less in step. The coherence of their light is what makes lasers so useful, especially for encoding data. The name is derived from "Light Amplification by Stimulated Emission of Radiation."

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