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8 July 2004 Co:GGG edge cladding with adjusted absorption coefficients in composite crystals
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Proceedings Volume 5332, Solid State Lasers XIII: Technology and Devices; (2004)
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States
Gadolinium Gallium Garnet single crystals doped with cobalt ions are used for suppression of parasitic as edge cladding layers in Nd:Gd3Ga5O12 (Nd:GGG) crystal amplifier plates for heat capacity and other high power solid-state laser applications. Co:GGG absorbs at the lasing wavelength of 1062 nm. Nd:GGG amplifier plates with edge cladding of Co:GGG of adjusted absorption coefficient at 1062 nm will be used as adhesive-free bonded (AFB) composite crystal components in a heat capacity laser system at Lawrence Livermore National Laboratory. Composite formation of Nd:GGG and Co:GGG involves heat treatment. The absorption coefficient of the as-grown Co:GGG single crystal changes as function of heat treatment. We report on a method of reversibly adjusting the absorption coefficient of Co:GGG in a certain range, e.g. for a specific Co ion concentration of 0.0046% between 0.45/cm and 0.95/cm. The interpretation of the reversible adjustment of absorption coefficients based on absorption spectra, site symmetry and cobalt ion valency will be presented
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Huai-Chuan Lee, Helmuth E Meissner, and Oliver R Meissner "Co:GGG edge cladding with adjusted absorption coefficients in composite crystals", Proc. SPIE 5332, Solid State Lasers XIII: Technology and Devices, (8 July 2004);

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