Abstract
Congruent Ho 3+ (1 mol.%): LiNbO 3 crystals codoped with MgO (X mol.%, X = 1, 3, 5 and 7) were grown by the Czochralski technique. The ultraviolet-visible (UV-Vis) and infrared (IR) spectra were measured in order to analyze the defect structure of the crystals. The concentrations of Mg, Ho, Li and Nb in the crystals were carried out with an inductively coupled plasma atomic emission spectrometer. Experimental results indicates as Mg 2+ doping concentration increases in melt, the distribution coefficients of Mg and Ho ions decrease, the Li/Nb ratio in the crystals decreases first and then increases, and the absorption edge shifts to a shorter wavelength. The light-induced scattering of Mg:Ho:LiNbO 3 crystals was quantitatively scaled via the incident exposure energy. The results demonstrated that Mg (7 mol.%): Ho:LiNbO 3 crystal had the weakest light-induced scattering and the mechanism related to their defect structures was discussed.
| Original language | English |
|---|---|
| Article number | 1250127 |
| Journal | Modern Physics Letters B |
| Volume | 26 |
| Issue number | 20 |
| DOIs | |
| State | Published - 10 Aug 2012 |
Keywords
- Crystal growth
- Czochralski method
- defect structure
- light-induced scattering
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