Hydrothermal growth of Ti:sapphire (Ti 3+: Al 2O 3) laser crystals

Titanium(III)-doped sapphire single crystals (Ti 3+:Al 2O 3) have been grown by the hydrothermal technique for the first time. Due to Ti 3+ instability, Ti:sapphire could not easily be grown in alkaline solution. Instead, we grew the crystals in acidic solutions. The solubility of Ti 3+:Al 2O 3 in H...

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Veröffentlicht in:Journal of crystal growth 2009-01, Vol.311 (3), p.443-447
Hauptverfasser: Wang, Buguo, Bliss, David F., Callahan, Michael J.
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Bliss, David F.
Callahan, Michael J.
description Titanium(III)-doped sapphire single crystals (Ti 3+:Al 2O 3) have been grown by the hydrothermal technique for the first time. Due to Ti 3+ instability, Ti:sapphire could not easily be grown in alkaline solution. Instead, we grew the crystals in acidic solutions. The solubility of Ti 3+:Al 2O 3 in HCl hydrothermal solutions was found to exhibit a negative temperature coefficient. The grown crystals were characterized by X-ray diffraction, elemental analysis, and electron paramagnetic resonance (EPR). The results indicated that the grown crystals have a uniform distribution of Ti(III) (about 2×10 20 atoms/cc) and are of high quality.
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subjects A2. Hydrothermal technique
B1. Oxides
B1. Ti:sapphire
B3. Solid state lasers
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Materials science
Methods of crystal growth
physics of crystal growth
Physics
Solubility, segregation, and mixing
phase separation
title Hydrothermal growth of Ti:sapphire (Ti 3+: Al 2O 3) laser crystals
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