Photorefraction Resistance of Na<suB>2</suB>O-Doped Lithium Niobate Single Crystals

Chin. Phys. Lett.

1997, Vol. 14

Issue (8): 629-632 DOI:

Original Articles

Photorefraction Resistance of Na₂O-Doped Lithium Niobate Single Crystals

KONG Yong-fa^1,2;WEN Jin-ke¹;YANG Zheng-fang²

¹Department of Physics, Nankai University, Tianjin 300071 ²Department of Materials Science and Engineering, Tianjin University, Tianjin 300072

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KONG Yong-fa, WEN Jin-ke, YANG Zheng-fang 1997 Chin. Phys. Lett. 14 629-632

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Abstract Na₂O-doped (up to 3mol% Na in the melt) LiNbO₃ crystals have been grown by the Czochraski method. The experimental results show that Na₂O dopants can increase the ability of LiNbO₃ to resist light-induced optical damage, but the photorefraction of LiNbO₃ : Na(3 mol%) is larger than that of LiNbO₃ : Na (1 mol%) and the absorption edge of the former crystal has a longer wavelength compared with that of the latter. These two abnormal phenomena were interpreted as that some ilmenite structure (NaNbO₃) regions are formed in doped LiNbO₃ crystals with the increasing dopant concentration of Na₂O.

Keywords: 79.20.Ds 72.40.+w 78.20.Dj

Published: 01 August 1997

PACS:	79.20.Ds	(Laser-beam impact phenomena)
	72.40.+w	(Photoconduction and photovoltaic effects)
	78.20.Dj

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1997/V14/I8/0629

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