Optical Maser Characteristics of Rare-Earth Ions in Crystals
- 1 April 1963
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 34 (4), 897-909
- https://doi.org/10.1063/1.1729557
Abstract
Several divalent and trivalent rare‐earth ions incorporated in various host crystals have been found to exhibit stimulated emission in the near infrared. A report is presented describing some of the basic characteristics of these materials: absorption and fluorescence spectra, energy level diagrams, optical maser wavelengths and operating temperatures, and thresholds for stimulated emission. Recent observations on the CaWO4:Nd3+ optical maser in continuous operation are also described.Keywords
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