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Influence of [Li]/[Nb] ratios (0.85, 0.94, 1.05, 1.20 and 1.38) on dopant occupancy and light-induced scattering of Hf:Yb:Ho:LiNbO3

Research paper by Li Dai, Chao Tan, Zhehua Yan, Yuheng Xu

Indexed on: 10 May '16Published on: 09 May '16Published in: Journal of Alloys and Compounds



Abstract

Hf:Yb: Ho: LiNbO3 crystals with various [Li]/[Nb] ratios (0.85, 0.94, 1.05, 1.20 and 1.38) were grown by Czochraski technique. In this report, the defect structure and dopant occupancy of Hf: Yb: Ho: LiNbO3 crystals were determined by IR transmission spectrum. In all cases, the effective distribution coefficients are less than 1. Furthermore, the light-induced scattering of Hf: Yb: Ho: LiNbO3 crystals was quantitatively measured via the incident exposure energy. The exposure energy of Hf: Yb: Ho: LiNbO3 crystal with the [Li]/[Nb] ratios of 1.38 is 763.84 J/cm2, approximately 326 folds than that of the Hf: Yb: Ho: LiNbO3 crystal ([Li]/[Nb] = 0.85) in magnitude.

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