Excimer laser

Short for "Excited dimer".

Some atomic gases (like argon, or krypton) mixed with fluorine, have a tendency to form excited compounds, like ArF or KrF when excited by an electric discharge. These compounds are very unstable, and decompose readily into its original componants, with emission of a photon. Note that the correct term should usually be "Exciplex laser", as these excited compounds are not actually dimers. Excimer lasers share some common properties :

- Emission in the medium UV (126nm to 558nm).
- Short, intense pulse.
- Rectangular beam profile.

Expert in lasers

 

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