Growth and basic investigations of LiNbO3 single crystals doped with Dy3+ ions

Izabella Pracka; Michal Malinowski; Marek Swirkowicz; Andrzej L. Bajor; B. Surma; Jaroslaw Kisielewski; Tadeusz Lukasiewicz; Zbigniew Galazka

doi:10.1117/12.280757

14 July 1997 Growth and basic investigations of LiNbO3 single crystals doped with Dy3+ ions

Izabella Pracka, Michal Malinowski, Marek Swirkowicz, Andrzej L. Bajor, B. Surma, Jaroslaw Kisielewski, Tadeusz Lukasiewicz, Zbigniew Galazka

Author Affiliations +

Proceedings Volume 3178, Solid State Crystals: Growth and Characterization; (1997) https://doi.org/10.1117/12.280757
Event: XII Conference on Solid State Crystals: Materials Science and Applications, 1996, Zakopane, Poland

Abstract

Lithium niobate crystals doped with Dy³⁺ ions were grown by the Czochralski method. The doping concentrations were 0.3, 1, and 1.7 at.%, respectively. The dopant distribution was measured by the electron microprobe 'JOEL-JXA 50 A'-type device, and from these measurements the segregation coefficient has been found to be close to unity (k approximately equals 0.8). Optical homogeneity of crystals was investigated by the conoscopic and polarimetric methods. For the Z-optical axis direction it was found that the maximum residual birefringence (not exceeding 1.5 multiplied by 10^-4), involved by residual stresses, occurred at the perimeters of the crystals, and the remaining crystalline areas were almost entirely free from excessive stresses. The absorption characteristics in the wavelength range of 200 - 6000 nm were measured. The photoluminescence characteristics were also measured in the visible part of the spectrum. It has been found that an important feature associated with luminescence of the Dy³⁺ in LiNbO₃ is its high intensity and long decay time. From this it can be concluded that LiNbO₃:Dy³⁺ is particularly well suited for visible lasers.

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Izabella Pracka, Michal Malinowski, Marek Swirkowicz, Andrzej L. Bajor, B. Surma, Jaroslaw Kisielewski, Tadeusz Lukasiewicz, and Zbigniew Galazka "Growth and basic investigations of LiNbO3 single crystals doped with Dy3+ ions", Proc. SPIE 3178, Solid State Crystals: Growth and Characterization, (14 July 1997); https://doi.org/10.1117/12.280757

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