Chromium Activated Crystals as Tunable Laser Media: What Makes Them Special

摘要

The trivalent chromium ion has been successfully used as the optical activator in a large number of tunable crystalline laser materials. Some of the unique properties of its 3d sup 3 electron configuration which have led to this widespread success are reviewed. It is found that a combination of positive attributes had led to a higher probability of success with the use of the Cr sup 3+ ion than with other transition metal ions. Some negative factors associated with the use of other transition metal ions are identified as areas in need of attention if they are to be used. Optimization of the performance of chromium doped laser materials under flashlamp pumping is also discussed. 11 refs., 7 figs., 5 tabs. (ERA citation 11:054395)