Abstract
A technique has been developed for recording the luminescence spectra of laser glasses at various temperatures. The influence of heating on the luminescence contour of highly concentrated ytterbium–erbium phosphate glass has been experimentally investigated for the principal laser transition at 1.5μm. It is shown that, as the temperature increases, the effective stimulated-emission cross section at the maximum linearly decreases, and the width of the contour increases.
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