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Chromium-doped Gain Media

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Definition: laser gain media doped with chromium ions

German: chromdotierte Verstärkermedien

Categories: lasers, optical materials

How to cite the article; suggest additional literature

Chromium (chemical symbol: Cr) is a chemical element belonging to the group of transition metals. Chromium ions of different charge states are used as laser-active dopants of gain media:

Due to the strong electron–phonon interaction in such gain media, chromium-doped lasers are called vibronic lasers and have a large gain bandwidth.

Note that some chromium-doped crystals, in particular Cr4+:YAG, are also used as saturable absorbers in Q-switched lasers.


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