FEFU scientists have created a new type of optical ceramic material
Optical nanoceramics YAG:Nd with a high concentration of active additive outclassed the commercial glass and single crystals used in laser technologies by it's physical and mechanical characteristics.
The new type of optical ceramics was designed by young scientists' team of the Far Eastern Federal University (FEFU) under Denis Yu. Kosyanov, Ph.D., senior researcher of the School of Natural Sciences (FEFU). The scientific and technical results of the work presented for publishing in the Ceramics International. Patent application was filed to RosPatent (reg.number 2018119380).
Ceramics created is one of the numbers of other results of the work to design transparent polycrystalline materials with specified properties. The results of previous research have already been published in high-ranking scientific journals Journal of Alloys and Compounds, Journal of the European Ceramic Society, Ceramics International, Optical Materials, etc.
'The new so-called 'fine-grained' ceramics YAG: Nd contains up to 4 at.% active additive of neodymium ions. So far, that is unattainable with modern technologies of laser crystals production. The applying of the innovative method of reaction spark plasma sintering (RSPS) made it possible to carry out the synthesis 10-20 times faster comparing to the known approaches, and to obtain a monophase polycrystal with an average grain size of 500 nm', senior researcher Denis Kasyanov comments on. 'An important result of the invention is the simplification and cost reduction of the technology of obtaining optical materials with a YAG structure. In particular, the easiness of controlling the variety and the amount of active additive within the RSPS method makes it possible to vary the functionality of the final material', he proceeds.
Effect of Nd3+ ions on phase transformations and microstructure of 0–4 at.% Nd3+:Y3Al5O12 transparent ceramics D.Yu.Kosyanov, R.P.Yavetskiy, V.N.Baumer, Yu.L.Kopylov, V.B.Kravchenko, I.O.Vorona, A.I.Cherednichenko, V.I.Vovna, A.V.Tolmachev Journal of Alloys and Compounds, Volume 686, Pages 526-532 DOI: https://doi.org/10.1016/j.jallcom.2016.06.046
Structural-phase state and lasing of 5–15 at% Yb3+:Y3Al5O12 optical ceramics I.O.Vorona, R.P.Yavetskiy, A.G.Doroshenko, S.V.Parkhomenko, V.N.Baumer, A.V.Tolmachev, D.Yu.Kosyanov, V.I.Vovna, V.G.Kuryavyi, M.Greculeasa, L.Gheorghe, S.Hau, C.Gheorghe, G.Croitoru Journal of the European Ceramic Society, Volume 37, Issue 13, Pages 4115-4122 DOI: https://doi.org/10.1016/j.jeurceramsoc.2017.05.023
Effect of green body annealing on laser performance of YAG:Nd3+ ceramics R.P.Yavetskiy, S.V.Parkhomenko, I.O.Vorona, A.V.Tolmachev, D.Yu.Kosyanov, V.G.Kuryavyi, V.Yu.Mayorov, L.Gheorghe, G.Croitoru, M.Enculescu Ceramics International, Volume 44, Issue 4, Pages 4487-4490 DOI: https://doi.org/10.1016/j.ceramint.2017.11.192
1532 nm sensitized luminescence and up-conversion in Yb,Er:YAG transparent ceramics I.O.Vorona, R.P.Yavetskiy, M.V.Dobrotvorskaya, A.G.Doroshenko, S.V.Parkhomenko, A.V.Tolmachev, D. Yu.Kosyanov, L.Gheorghe, C.Gheorghe, S.HaucM.Enculescu Optical Materials, Volume 77, Pages 221-225 DOI: https://doi.org/10.1016/j.optmat.2018.01.038