alexa Luminescence And Optical Spectroscopy Of Condensed Matter | 14740
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
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3rd International Conference on Nanotek & Expo

A. Pradeep Raja
Accepted Abstracts: J Nanomed Nanotechnol
DOI: 10.4172/2157-7439.S1.015
Abstract
In this abstract, latest findings in luminescence quenching kinetics theory and advanced solid state laser experiments. Luminescence quenching kinetics is a popular and exceptionally useful tool to analyze the nanosized luminophores and laser material nanostructure. Quenching kinetics may be multistage, some stages having a complex, not exponential form. It is often the case for modern laser materials, which are nanostructurized, and for particular cases of energy transfer (such as cooperative down-conversion). We present compact and easy-to-use analytical expressions and computer simulation for various cases of nonexponential quenching kinetics: migration-accelerated quenching in bulk material; cooperative luminescence quenching in bulk material; and two extreme cases of energy transfer in nanoparticles - static and with superfast migration (both including cooperative case of luminescence quenching in ensembles of acceptors comprised of two-, three-, and more particles). We also review the most perspective laser experiments lately performed in our laboratory, including those on fluoride laser nanoceramics and materials for middle infra-red lasers. Highlights: ? The law for far stage of static cooperative quenching, in particular, in nanoparticles ? Supermigration limit quenching in nanoparticles has a second, nonexponential, stage ? Oscillations in SrF2:Pr3+-the first ceramics working in visible spectral range 639 nm ? Middle infrared laser materials - ZnSe:Cr2+ and ZnMgSe:Cr2+, PbGa2S4:Dy3+
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