Growth and optical property of ZnWO4: Er3+ crystal

Abstract: Good quality crystals ZnWO4 activated with Er3+ have been grown by means of Czochralski method and characterized using optical spectroscopy techniques. XRD, absorption spectra, fluorescence spectrum are presented and the Judd–Ofelt intensity parameters Ω 2, Ω 4, and Ω 6 are obtained to be 6.76×10–20, 0.37×10–20, and 0.50×10–20 cm2, respectively. Along crystallographic axes, refractive indices are presented. The fluorescence decay time of the 4 I 13/2 level has also been investigated and shows an exponential behavior with a lifetime value of 5.52ms. The crystal is potentially used for green and infrared eye-safe lasers. [Copyright &y& Elsevier]