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23 May 2018 Amplified spontaneous emission (ASE) and laser effect in β-NaYF4: Ce,Tb nanocrystals (Conference Presentation)
Eugen Pavel
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Proceedings Volume 10683, Fiber Lasers and Glass Photonics: Materials through Applications; 106831M (2018) https://doi.org/10.1117/12.2306516
Event: SPIE Photonics Europe, 2018, Strasbourg, France
Abstract
Amplified spontaneous emission (ASE) and laser effect in β-NaYF4: Ce,Tb nanocrystals E. Pavel (Storex Technologies, Bucharest, Romania), V. Marinescu (National Institute for R&D in Electrical Engineering, Bucharest, Romania) and M. Lungulescu (National Institute for R&D in Electrical Engineering, Bucharest, Romania) Miniaturization of coherent light sources, such as nanolasers and random lasers, has great potential for applications in nanoelectronics , nanophotonics, microscopy and biomedicine. Some micro- and nanocrystals are laser-active media for random laser, whispering-gallery-mode (WGM) laser or spaser (plasmonic laser). NaYF4 is one of the best optical materials due to its low phonon energy (< 350 cm-1), high refractive index and thermal stability. Hexagonal form of NaYF4, β-NaYF4 is an efficient host material for rare-earth ions. Doped micro- and nanocrystals could be produced by hydrothermal method as described in Ref. [1]. β-NaYF4:Ce,Tb crystals have interesting optical properties. In the present work we shall present our results regarding studies regarding amplified spontaneous emission (ASE) and laser effect in β-NaYF4: Ce,Tb nanocrystals. Lasing was observed in a plane parallel optical microcavity Research regarding new laser-active media is important in developing practical applications for small coherent light sources. Reference [1] E. Pavel, V.Marinescu, M. Lungulescu and B. Sbarcea, ”Hydrothermal synthesis of β-NaYF4: Ce,Tb crystals doped with different cerium concentrations”, Materials Letters, ( 2018) 210, 12-15
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Eugen Pavel "Amplified spontaneous emission (ASE) and laser effect in β-NaYF4: Ce,Tb nanocrystals (Conference Presentation)", Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 106831M (23 May 2018); https://doi.org/10.1117/12.2306516
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KEYWORDS
Nanocrystals
Crystals
Electrical engineering
Laser applications
Light sources
Random lasers
Microscopy
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