Thermal stability and spectroscopic properties of Er3+-doped antimony-borosilicate glasses

摘要

This paper reports on the optical spectroscopic properties and thermal stability of Er3+-doped antimony-borosilicate glasses for developing 1.5 mu m optical amplifiers. Upon excitation at 980 nm laser diode, an intense 1.5 mu m infrared fluorescence has been observed with the maximum full width at half maximum (FWHM) of 90 nm for Er3+-doped antimony-borosilicate glasses. The emission cross-section and the lifetime of the I-4(13/2) level of Er3+ ions are 6.3 x 10(-21) cm(2) and 0.30 ms, respectively. It is noted that the product of the emission cross-section and FWHM of the glass studied is as great as 567 x 10(-21) cm(2) nm, which is comparable or higher than that of bismuthate and tellurite glasses. (C) 2008 Elsevier B.V. All rights reserved.