Optical properties of transparent Dy3+ doped Ba2TiSi2O8 glass ceramic

Abstract The Ba 2 TiSi 2 O 8 is a well known piezoelectric, ferroelectric and non-linear crystal. Nanocrystals of Ba 2 TiSi 2 O 8 doped with 1.5 Dy 3+ have been obtained by thermal treatment of a precursor glass and their optical properties have been studied. X-ray diffraction patterns and optical measurements have been carried out on the precursor glass and glass ceramic samples. The emission spectra corresponding to the Dy 3+ : 4 F 9/2 → 6 H 13/2 (575 nm), 4 F 9/2 → 6 H 11/2 (670 nm) and 4 F 9/2 → 6 H 9/2 (757 nm) transitions have been obtained under laser excitation at 473 nm. These measurements confirm the incorporation of the Dy 3+ ions into the Ba 2 TiSi 2 O 8 nanocrystals which produces an enhancement of luminescence at 575 nm. At this wavelength has been demonstrated a maximum optical amplification around 1.9 cm −1 (∼8.2 dB/cm).