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1	Visible and infrared emission from Er₂O₃ nanoparticles, and Ho⁺³, Tm⁺³, and Sm⁺³ doped in AlN for optical and biomedical applications Wilkinson, Lynda L. 21 July 2012 (has links) Rare-earth ions holmium (Ho+3), Thulium (Tm+3), and Samarium (Sm+3) were investigated for infrared emission and their possible biomedical applications by a photoluminescence (PL) system. Holmium’s (Ho+3) emission peaks were the result of transitions 5 S2 → 5 I7, and 5 S2 → 5 I5 respectively. Samarium’s (Sm+3) emission peaks were 936 nm and 1863 nm. Thulium’s (Tm+3) emission peaks were the a result of transitions 3 H4 → 3 H6, 3 H5 → 3 H6 , and 3 F4 → 3 H6 respectively. Erbium Oxide nanoparticles (Er2O3) mixed with water by a photoluminescence (PL) system. Erbium Oxide’ (Er2O3) nanoparticle’s emission peaks were the a result of transitions 4 I15/2 → 4 S3/2 , 4 I15/2 → 4 I13/2 respectively. The process was also repeated in vacuum and it was found that the green emission enhances tremendously when the nanoparticles are excited in vacuum. This enhanced luminescence from the Erbium Oxide nanoparticles shows their potential importance in the optical devices and Biomedical applications. / Department of Physics and Astronomy Erbium -- Optical properties Semiconductor nanoparticles Holmium ions -- Optical properties Thulium ions -- Optical properties Samarium -- Optical properties Doped semiconductors Aluminum nitride
2	Caracterizacao espectroscopica e dinamica temporal dos processos de transferencia de energia entre os ions Tm sup(3+) - Ho sup(3+) e Yb sup(3+) - Tm sup(3+) em cristais de LiYF sub(4) e LiLuF sub(4) TARELHO, LUIZ V.G. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:46:25Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:21Z (GMT). No. of bitstreams: 1 07543.pdf: 4162108 bytes, checksum: fea345edb32c7ebb6b06110c513a47b1 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP / FAPESP:95/03214-1 Lasers energy transfer crystal doping energy-level transitions lithium fluorides diode-pumped solid state lasers yttrium fluorides gadolinium fluorides lutetium fluorides holmium absorption spectra luminescence excited states czochralski method cross sections RARE EARTHS THULIUM IONS YTERBIUM IONS EXPERIMENTAL DATA
3	Caracterizacao espectroscopica e dinamica temporal dos processos de transferencia de energia entre os ions Tm sup(3+) - Ho sup(3+) e Yb sup(3+) - Tm sup(3+) em cristais de LiYF sub(4) e LiLuF sub(4) TARELHO, LUIZ V.G. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:46:25Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:21Z (GMT). No. of bitstreams: 1 07543.pdf: 4162108 bytes, checksum: fea345edb32c7ebb6b06110c513a47b1 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP / FAPESP:95/03214-1 lasers energy transfer crystal doping energy-level transitions lithium fluorides diode-pumped solid state lasers yttrium fluorides gadolinium fluorides lutetium fluorides holmium absorption spectra luminescence excited states czochralski method cross sections rare earths thulium ions ytterbium ions experimental data

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