Spectroscopic properties of Er3+ and Yb3+ doped phosphate–borate glasses

In this work, Judd–Ofelt analysis is applied to an extensive series of Er3+-doped and Er3+, Yb3+-codoped in phosphate–borate glass in order to evaluate their potential as both glass laser systems and amplifier materials. A spectroscopic investigation is presented. enomenological Judd–Ofelt parameters Ω2, Ω4 and Ω6 are determined for both rare-earth ions together with their quality factors and compared to the equivalent parameters for other host glasses. The absorption cross section for the 4 I 13 / 2 → 4 I 15 / 2 transition is determined. Photoluminescence (PL) and its decay behaviour studies were carried out for the transition 4 I 13 / 2 → 4 I 15 / 2 .