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Chemistry

Clemson University

Crystals

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Full-Text Articles in Physical Sciences and Mathematics

Towards A Greater Understanding Of Hydrothermally Grown Garnets And Sesquioxide Crystals For Laser Applications, Cheryl Moore Dec 2015

Towards A Greater Understanding Of Hydrothermally Grown Garnets And Sesquioxide Crystals For Laser Applications, Cheryl Moore

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ABSTRACT The hydrothermal method of crystal growth offers many benefits over traditional melt-based techniques such as lower temperature requirements relieving detrimental high temperature effects such as stress fracturing and a closed-environment, which limits impurities. The continued study of this type of growth including hydrothermal epitaxy is crucial in our world of constant miniaturization. Presented in this thesis is the hydrothermal growth of crystals of LuAG and Lu2O3 doped with a variety of dopants. Their room-temperature and cryogenic absorption spectra are also presented. Much like Nature uses heat, pressure, water and a nutrient-rich feedstock we have used this hydrothermal technique to …

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Synthesis Of Complex Fluorides For Optical Applications, Seth Stepleton Aug 2009

Synthesis Of Complex Fluorides For Optical Applications, Seth Stepleton

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Large single crystals of alkali metal fluorides are desirable for many reasons. Fluoride laser crystals have a wide transmission range and on account of their low phonon energies, many efficient laser emissions have been obtained from 285 nm to 4.34 µm.1,2 Inorganic fluoride single crystals feature large bandgaps, very wide optical transmittance ranges from vacuum-ultraviolet (VUV) to mid-IR wavelength regions, lower refractive indices than those of oxides, and typically lower phonon energies (which drastically reduce multiphonon relaxation rates of rare earth ions).3
The main goal of this work was to investigate the hydrothermal synthesis of alkali metal fluorides. Melt techniques …

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