Abstract

The photoluminescence spectra of ZnWO₄ in the near infrared region were obtained in the temperature range from 10 to 400 K. Zero-phonon lines and phonon replicas were observed. The temperature dependences of the shapes, widths, positions, and intensities of the zero-phonon lines in the infrared emission band of ZnWO₄ single crystals were investigated experimentally. The results obtained are discussed in terms of the theory of electron–phonon interactions in impurity crystals. Anharmonic effects of the crystal vibrations are discussed.

© 1992 Optical Society of America