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Limarenko, Ruslan
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article
Reactive sintering of highly-doped YAG/Nd3+:YAG/YAG composite ceramics
Abstract
<jats:p>Multilayer YAG/Nd3+:YAG/YAG composite laser ceramics were obtained by thereactive sintering in vacuum. The effect of the neodymium ion concentration(1-4 at.%) on the formation of defects and optical quality of compositeceramics was studied. It was found that neodymium ions modify densificationkinetics during solid-state reactive sintering of the highly-doped Nd3+:YAGceramics by decreasing shrinkage rate in the temperature range 1320-1350 ?C.Differences in phase transformation kinetics during reactive sintering leadto generation of pores at the interface of adjacent layers which decrease theoptical homogeneity of fabricated YAG/Nd3+:YAG/YAG composite ceramics. Theinfluence of layered structure on the laser performance of optical ceramicswas investigated. It was shown that the ceramics with multilayer compositearchitecture have slope efficiency almost twice as the single-layer ceramicswith the same composition (22% and 12.5%, respectively).</jats:p>