Abstract
Zn:Dy:\(\mathrm{LiNbO}_3\) crystals with different [Li]/[Nb] ratios ([Li]/[Nb] = 0.946, 1.05, 1.20, 1.38) were grown by pulling method in air. Its structure and composition were analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-AES). It was found that the effective segregation coefficient of \(\mathrm{Zn}^{2+}\) decreases and that of \({\mathrm{Dy}}^{3+}\) increases with the increase of lithium-niobium ratio. The anti-optical damage properties of Zn:Dy:\(\mathrm{LiNbO}_3\) crystals were investigated by an exposure energy flow method. The results showed that the optical damage resistance ability of Zn:Dy:\(\mathrm{LiNbO}_3\) crystals was improved with the increasing [Li]/[Nb] ratio. The optical uniformity of crystals was measured by birefringence gradient method. The results show that the optical uniformity is proportional to the [Li]/[Nb] ratio. This paper mainly reveals the effect of [Li]/[Nb] ratio on the defect structure of Zn:Dy:\(\mathrm{LiNbO}_3\) crystals and on the partial optical properties.
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Acknowledgements
This work is supported by Open Project Funds for the Key Laboratory of Space Photoelectric Detection and Perception (Nanjing University of Aeronautics and Astronautics) (No. NJ2020021-9), Natural Science Fund of Heilongjiang Province of China (No. LH2020E085) and Science Funds for the Young Innovative Talents of HUST, the Opening Project of State Key Laboratory of Crystal Material(Shandong University)(No. KF1906)
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LD: Conceptualization, Methodology, Software, Investigation, Formal Analysis, Writing—Original Draft; ZX: Data Curation, Writing—Original Draft; SY: Resources, Supervision; KH: Visualization, Writing—Review & Editing
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Dai, L., Xu, Z., Yang, S. et al. Investigation of defect structure and optical properties of Zn:Dy:\(\mathrm{LiNbO}_3\) crystals with different [Li]/[Nb] ratios. Eur. Phys. J. D 76, 202 (2022). https://doi.org/10.1140/epjd/s10053-022-00517-0
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DOI: https://doi.org/10.1140/epjd/s10053-022-00517-0