5d-4f luminescence of Nd3+, Gd3+, Er3+, Tm3+, and Ho3+ ions in crystals of alkaline earth fluorides |
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| Authors: | E A Radzhabov E A Prosekina |
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| Institution: | (1) Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong S.A.R., People’s Republic of China |
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| Abstract: | The vacuum ultraviolet emission spectra of alkaline-earth fluoride (CaF2, SrF2, BaF2) crystals with rare earth impurity ions (Nd, Gd, Er, Tm, Ho) have been investigated. The main luminescence bands are described
well by the transitions from the lowest excited 5d state to different 4f levels of rare earth ions. |
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