Luminescence Properties of the Tm3+-doped LiKB4O7 Glass

The spectroscopic properties of Tm-doped borate glass with basic composition LiKB
₄
O
₇
(0.5Li
₂
O-0.5K
₂
O-2B
₂
O
₃
) have been investigated with usage optical absorption and photoluminescence (excitation, emission, decay kinetics) experimental techniques as well as Judd-Ofelt analysis. The Tm
³⁺
optical absorption and photoluminescence spectra, which reveal several f-f transitions in the visible and infrared regions were analysed in detail. Decay kinetics of luminescence for excited states of Tm
³⁺
centres was examined. Basing on obtained results it was suggested that LiKB
₄
O
₇
:Tm glass is promising luminescent and laser material.