Photoluminescence in YbGa2Se4 and YbGa2Se4:Nd3+ single crystalsстатья
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Дата последнего поиска статьи во внешних источниках: 12 октября 2013 г.
Аннотация:The excitation and photoluminescence spectra of YbGa2Se4 and YbGa2Se4:Nd3+ single crystals recorded at different temperatures and neodymium concentrations have been investigated. The photoluminescence spectrum exhibits intracenter luminescence lines of the Nd3+ ion in wavelength ranges of 0.804-0.84, 0.88-0.92, 0.96-0.996, and 1.06-1.12 mu m against a broadband emission background. These ranges are related, respectively, to the (4) F (5/2)-(4) I (9/2), (4) F (3/2)-(4) I (9/2), (4) F (5/2)-(4) I (11/2), and (4) F (3/2)-(4) I (11/2) transitions.