Reactive sintering of highly-doped YAG/Nd3+ :YAG/YAG composite ceramics

Processing and Application of Ceramics

Roman P. Yavetskiy¹  Andrey G. Doroshenko¹  Alexander V. Tolmachev¹  Ihor O. Vorona¹  Sergey V. Parkhomenko¹  Ekaterina G. Chernomorets¹  Denis Yu. Kosyanov²  Ruslan A. Limarenko³  Viktor B. Taranenko³  Sergey V. Frolov³ 

[1] Institute for Single Crystals of NAS of Ukraine, 60 Nauky Ave., Kharkiv 61072, Ukraine;Far Eastern Federal University, 8 Sukhanova Str., Vladivostok 690950, Russian Federation;International Center “Institute of Applied Optics”, NAS of Ukraine, 10-G Kudryavska Str., Kyiv 04053, Ukraine;

关键词: Nd3+ :YAG;    pressing;    sintering;    microstructure;    optical properties;    lasers;   

DOI  :  10.2298/PAC1704290V

来源: DOAJ

【 摘 要 】

Multilayer YAG/Nd3+:YAG/YAG composite laser ceramics were obtained by the reactive sintering in vacuum. The effect of the neodymium ion concentration (1–4 at.%) on the formation of defects and optical quality of composite ceramics was studied. It was found that neodymium ions modify densification kinetics during solid-state reactive sintering of the highly-doped Nd3+:YAG ceramics by decreasing shrinkage rate in the temperature range 1320–1350 °C. Differences in phase transformation kinetics during reactive sintering lead to generation of pores at the interface of adjacent layers which decrease the optical homogeneity of fabricated YAG/Nd3+:YAG/YAG composite ceramics. The influence of layered structure on the laser performance of optical ceramics was investigated. It was shown that the ceramics with multilayer composite architecture have slope efficiency almost twice as the single-layer ceramics with the same composition (22% and 12.5%, respectively).

【 授权许可】

Unknown