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 SM ISO690:2012MARKUSHEV, Valery, URSACHI, Veaceslav, RYZHKOV, Mikhail, BRISKINA, Ch M.M., TIGINYANU, Ion, RUSU, Emil, ZAKHIDOV, Anvar. ZnO lasing in complex systems with tetrapods. In: Applied Physics B: Lasers and Optics, 2008, vol. 93, pp. 231-238. ISSN 0946-2171. DOI: https://doi.org/10.1007/s00340-008-3153-9 |
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  Applied Physics B: Lasers and Optics |
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| Volumul 93 / 2008 / ISSN 0946-2171 /ISSNe 1432-0649 | ||||||
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| DOI:https://doi.org/10.1007/s00340-008-3153-9 | ||||||
| Pag. 231-238 | ||||||
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A ZnO structure in the form of a core-shell wire was grown with a modified vapour transport and condensation method. The wire consists of a dense core which may play the role of a waveguide and a shell formed mainly from tetrapod-type crystallites. The high optical quality of the produced ZnO material is confirmed by continuous wave photoluminescence (PL) analysis demonstrating that low- temperature PL is related to the recombination of bound excitons, while room-temperature PL is due to free excitons. Good quality of the crystal structure is demonstrated also by the Raman spectrum. The shell of the wire exhibits room-temperature laser action due to lasing modes in tetrapods under the excitation by nanosecond laser pulses. The nature of the lasing modes is discussed. A simplified model for one of the possible modes is suggested. |
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| Cuvinte-cheie Chlorine compounds, Excitons, laser excitation, Luminescence, Pulsed laser applications, Semiconducting zinc compounds, Shells (structures), Wire, Zinc alloys, zinc oxide, Lasers Light emission |
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