Optical absorption spectra of glasses were measured with the spectrophotometer LOMO-PHOTONICS SF-256 UVI in the spectral range of 200–1000 nm. The photoluminescence excitation spectra were measured with two crossed monochromators (MDR-204) and PMT Hamamatsu R928 as a radiation detector.
Optical absorption spectra of glasses were measured with the spectrophotometer LOMO-PHOTONICS SF-256 UVI in the spectral range of 200–1000 nm. The photoluminescence excitation spectra were measured with two crossed monochromators (MDR-204) and PMT Hamamatsu R928 as a radiation detector.