Abstract

An examination of the energy levels of Er3+ and Nd3+ ions in YAG reveals that the Er3+ 4I13/2 and the Nd3+ 4I15/2 levels are nearly isoenergetic.[1] This observation led to the suggestion made by Kaminskii et al that the Er3+ ions could be cross-relaxed by the Nd3+ ions.[2] Further, since the 4I15/2 level is known to relax very rapidly to the 4I9/2 ground state this cross-relaxation could provide a rapid and efficient means of reducing or eliminating the self- termination of the 2.94 µm. Er3+ transition.

© 1987 Optical Society of America

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References

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