Abstract
Spectroscopic and laser properties of Nd3+ embedded in a 2-hydroxyethyl methacrylate (HEMA) solid plastic host are characterized. The Judd–Ofelt model has been applied to the room temperature absorption intensities of Nd3+(4f3) transitions in HEMA to determine the three phenomenological intensity parameters: Ω2, Ω4 and Ω6. The intensity parameters are then utilized to determine the radiative decay rates (emission probabilities of transitions) and branching ratios of the Nd3+(4f3) transitions from the upper manifold state 4F3/2 to the lower-lying multiplet manifolds 4IJ′. The predicted decay rates and branching ratios of the Nd3+(4f3) inter-manifold transitions in HEMA are compared with those in other laser host media. From the radiative decay rates, the radiative lifetime of the Nd3+4F3/2 excited state is determined. Copyright © 2004 Society of Chemical Industry
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