Abstract
The dependence of the refractive indices, absorption edge and optical damage in congruent HfO2-doped LiNbO3 crystal are reported. A small amount of Cr3+ ions (0.1 mol%) was introduced in the doped crystals as optical probe. The experimental data indicates that the extraordinary and ordinary indices depend on the Hf4+ ions concentration showing a singularly for a dopant level of ~2.7 mol%. The dependence of the absorption edge also shows a transition region at this Hf4+ concentration. The distortion of the transmitted light through samples doped with different concentrations of Hf4+ ions indicates that an inhibition of optical damages is achieved at above 3 mol% of dopant. A charge compensation mechanism is proposed to explain the role of the Hf4+ ions for the observed experimental result.
Original language | English |
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Pages (from-to) | 423-428 |
Number of pages | 6 |
Journal | Materials Science Forum |
Volume | 480-481 |
DOIs | |
Publication status | Published - Mar 2005 |
Keywords
- absorption coefficients
- charge compensation
- chromium
- doping profiles
- hafnium compounds
- impurity distribution
- lithium compounds
- refractive index