Spectroscopic properties of Nd3+ ions in Li2O[sbnd]MO (M=Mg, Ca and Sr)[sbnd]Sb2O3 glasses

Abstract

The primary objective of the present work is to study the spectroscopic properties of Nd3+ ions in Li2OMO (M=Mg, Ca and Sr)Sb2O3 glass system. The current glass samples have been synthesized by the melt-quenching technique. The physical and thermal properties of the prepared glass samples have been calculated. Optical absorption, IR, photoluminescence (PL) and decay characteristics were recorded at ambient temperature. The Judd–Ofelt (J-O) intensity parameters Ω2, Ω4 and Ω6 for Nd2O3 mixed glasses were calculated using absorbance spectra and found to be the order Ω2 > Ω6 > Ω4. The SrO mixed glass sample J-O parameter Ω2 is found to be the lowest and has the highest emission intensity, radiative probability (A) and branching ratio (β) compared to other two glass samples MgO and CaO. The lifetime of 4F3/2 transition has been experimentally recorded at λexc= 585 nm and found that SrO mixed glass is a favorable one and getting the highest quantum efficiency (η = 64.5%). The chromaticity coordinates confirmed that the prepared glass samples were potential under 585 nm excitation wavelength. The IR studies suggest that the structural disorder may reduce the low phonon losses and increase the PL output in SrO mixed glasses. The studied results may useful for enhancing optical amplification as well as potential to generate in solid state NIR laser applications at 1.066 µm.