Trindade, Neilo MarcosTabata, Américo Sheitiro [UNESP]Scalvi, Luis Vicente de Andrade [UNESP]Scalvi, Rosa Maria Fernandes [UNESP]2016-03-022016-03-022011Materials Sciences and Applications, v. 02, p. 284-287, 2011.2153-117Xhttp://hdl.handle.net/11449/134788Results of photoluminescence measurements for natural and synthetic alexandrite (BeAl2O4:Cr3+) are presented, where the samples are excited by the 488 nm line of an Ar+ laser, at different temperatures. The main issue is the analysis of the Cr3+ transition in the chrysoberyl matrix (BeAl2O4), with major technological application as active media for laser action. Results indicate anomalous behavior of Cr3+ transition depending on the measurement temperature. A simple model to explain the phenomena is suggested.284-287engAlexandriteLuminescenceCr3+ TransitionsOptical AbsorptionArtigo10.4236/msa.2011.24037Acesso restrito10097466385246909354064620643611049260043940211577307194764512320000-0001-5762-6424