VUV emission of rare-earth ions doped into fluoride crystals
2000; Elsevier BV; Volume: 87-89; Linguagem: Inglês
10.1016/s0022-2313(99)00507-4
ISSN1872-7883
AutoresV.N. Makhov, Н.М. Хайдуков, N.Yu Kirikova, M. Kirm, J.C. Krupa, Tatiana Ouvarova, G. Zimmerer,
Tópico(s)Solid State Laser Technologies
ResumoVUV emission of LiY1−xErxF4 single crystals (x=0.05, 0.2, 1) has been studied in an extended range of excitation energy and in a wide temperature range. It was found that strong concentration quenching occurs in highly doped crystals leading to nanosecond decay for both spin-allowed and spin-forbidden 5d–4f transitions in Er3+. The impact mechanism of the energy transfer from the matrix to Er3+ ions results in relatively high quantum yield of Er3+ d–f luminescence in such crystals at high-energy excitation. It was shown that the scheme of intermediate electron–phonon coupling should be used for the description of bandwidth temperature broadening for d–f luminescence.
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