Specific features of Tm ³⁺ doped BiB ₃O ₆ glasses fluorescence spectra and their kinetics

Synthesis and spectral fluorescent features of the thulium-doped BiB ₃O ₆ glasses are presented. All spectra were recorded using a pulsed (pulse energy ca. 1 μJ, pulse duration 10 ns) 355 nm third harmonic of 10 kHz Nd:YAG laser as an excitation source. A laser beam was focused in a backscattering geometry onto about 1 mm ² spot on the surface of a sample. The Andor SR-303i spectrograph equipped with an Andor DH-501 intensified charge coupled device with spectral resolution up to 1 nm was used as a spectra recorder. The time-resolution of this system can be as low as 5 ns. The decay kinetics was derived from integrated time-resolved spectra. Additionally the absorption and excitation spectra were measured. The main parameters of the Judd-Ofelt analysis were calculated and comparison of the obtained results with corresponding data for other materials was carried out.