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Laser induced quantum counter action of trivalent rare-earth ions in lanthanide halide hosts

D. E. Cox

Published Jan 1, 1974• 0 citations
OpenAlex

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IEEE Journal of Quantum Electronics•Aug 1, 1966•7 citations
Abstract : Quantum counter action has been observed in divalent rare earth doped ions lattices. The report presents the experimental work that has been done on Sm(2+) and Tm(2+) singly doped and Sm(2+) : Tm(2+) double doped systems in order to investigate the nature and efficiency of the schemes. The results show that while these systems are more efficient per ion than the trivalent rare earth doped systems the lower concentrations possible bring the overall efficiency back to the same level. (Author)
This paper reviews the results of a program of experimental work on infrared quantum counter action in trivalent rare earth doped CaF2, SrF2, BaF2, and LaF3lattices. The action has been found in eight of the nine possible ions that could give an output in the visible region. While the strengths of the various schemes at a 1 percent doping level are consistant with a low concentration theory, the strengths of the schemes at a 10 percent doping level indicate that there are ion-ion interactions influencing the systems. These ion-ion couplings are so effective that three photon addition schemes have been identified.