Temperature Dependent Luminescence Spectra of Synthetic and Natural Alexandrite (BeAl2O4:Cr3+)

Abstract

Results 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 Cr33+ transition depending on the measurement temperature. A simple model to explain the phenomena is suggested.

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N. Trindade, A. Tabata, R. Scalvi and L. Scalvi, "Temperature Dependent Luminescence Spectra of Synthetic and Natural Alexandrite (BeAl2O4:Cr3+)," Materials Sciences and Applications, Vol. 2 No. 4, 2011, pp. 284-287. doi: 10.4236/msa.2011.24037.

Conflicts of Interest

The authors declare no conflicts of interest.

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