Abstract

The temperature dependence of energy transfer between ${\mathrm{Nd}}^{3+}$ and ${\mathrm{Yb}}^{3+}$ ions in phosphate glass was investigated with emission spectra, time-resolved spectroscopy, and luminescence lifetimes. The time-resolved spectrograms vividly displayed processes of both ${\mathrm{Nd}}^{3+}\to {\mathrm{Yb}}^{3+}$ energy transfer and ${\mathrm{Yb}}^{3+}\to {\mathrm{Nd}}^{3+}$ energy transfer. The impact of temperature on energy transfer rate has been studied by analyzing the cumulative rise times and decay times of ${\mathrm{Yb}}^{3+}$ upon excitation of ${\mathrm{Nd}}^{3+}$ and the cumulative rise times and decay times of ${\mathrm{Nd}}^{3+}$ upon excitation of ${\mathrm{Yb}}^{3+}$ at different temperatures. It has been found that both ${\mathrm{Nd}}^{3+}\to {\mathrm{Yb}}^{3+}$ energy transfer and ${\mathrm{Yb}}^{3+}\to {\mathrm{Nd}}^{3+}$ energy transfer are accelerated along with increasing temperatures in a certain temperature range.

© 2019 Optical Society of America

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