ruby laser

https://doi.org/10.1351/goldbook.R05427
A pulsed source of @[email protected] emitting mainly at 694.3 \(\text{nm}\) from chromium ions (Cr3+) in aluminium oxide.
See:
laser
,
solid state lasers
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2272 [Terms] [Paper]