The study on Er<sup>3+</sup> doped lithium bismuth aluminium borate glass for infrared medium applications
E. Kaewnuam, N. Wantana, J. Kaewkhao
Abstract
Abstract In this work, lithium bismuth aluminium borate glasses doped with different concentration of Er 2 O 3 were prepared to investigate the physical, chemical group, optical and luminescence properties. All glasses were prepared by melt-quenching method. Glass density is in a range of 3.20 – 3.27 g/cm 3 with no obvious relation to Er 2 O 3 concentration. The FTIR spectra confirm the trigonal BO 3 and tetrahedra BO 4 borate unit appearing in glass network. This BO 4 unit and non-bridging oxygen tend to increase with increment of Er 2 O 3 content. Er 3+ in glass absorb photon in visible light and near-infrared region, confirmed by the absorption spectra. The emission and excitation spectra perform the infrared emission of Er 3+ under 523 and 977 nm excitation. The strongest emission with 1536 nm belongs to 1.00 mol% Er 2 O 3 doped glass that was excited by photon with 523 nm. This developed glass possesses the good potential for using as the source and medium material for infrared emitting and communication device.