https://doi.org/10.1140/epjd/s10053-022-00517-0
Regular Article – Optical Phenomena and Photonics
Investigation of defect structure and optical properties of Zn:Dy:
crystals with different [Li]/[Nb] ratios
School of Materials Science and Engineering, Harbin University of Science and Technology, 52 Xuefu Road, 150006, Nangang District, Harbin, Heilongjiang, People’s Republic of China
Received:
4
July
2022
Accepted:
26
September
2022
Published online:
27
October
2022
Zn:Dy: 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 
decreases and that of 
increases with the increase of lithium-niobium ratio. The anti-optical damage properties of Zn:Dy: crystals were investigated by an exposure energy flow method. The results showed that the optical damage resistance ability of Zn:Dy: 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: crystals and on the partial optical properties.
Ziqian Xu, Shunxiang Yang and Keqi He are contributed equally to this work.
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