Intense 1.6 μm fluorescence of Nd3+ doped cadmium bismuth silicate glasses
2014
In this work, Judd-Ofelt analysis is applied to rare-earth (RE = Nd3+) doped cadmium bismuth silicate (20CdO⋅xSiO2⋅(79.5−x)Bi2O3⋅0.5Nd2O3 (CSBN)) glasses in order to evaluate their potential as well as both glass laser systems and optical materials. The phenomenological Judd-Ofelt parameters (Ω2, Ω4, Ω6) are determined for RE ions with their quality factors and compared with the equivalent parameters for several other hosts. The calculated value of stimulated emission cross-section for 4F3/2→4I11/2 has high and varies 14.72×10−20 to 9.66×10−20 cm2 with Bi2O3 content in the host glass. The results point out that the glass system is good candidate for the development of photonics devices which are operating near infrared spectral range. Further, the FTIR results reveal that the glasses have BiO6, SiO4 and non-bridging oxygen as local structure.
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