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Pairwise Visible to UV Up-Conversion in Ho3+ and Tm3+ Doped CsMgCl3

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Up-Conversion is observed at 11 K when 1G4(D) state of Tm3+ and 5F5(D), 5F4(E), 5F3(F), 5F2(G) and 3K8(H) states of Ho3+ are pumped. These states absorb between 655 and 450 nm. The dynamics and pathways are studied which reveal a pairwise energy transfer between distinct pairs of Ho3+ or Tm3+ in crystals.

© 1993 Optical Society of America

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