Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Thiago A. A. de Assumpção"'
Autor:
Cid Bartolomeu de Araujo, Diego Silvério da Silva, Thiago Alexandre Alves de Assumpção, Luciana Reyes Pires Kassab, Davinson Mariano da Silva
Publikováno v:
The Scientific World Journal, Vol 2013 (2013)
Germanium- and tellurium-based glasses have been largely studied due to their recognized potential for photonics. In this paper, we review our recent studies that include the investigation of the Stokes and anti-Stokes photoluminescence (PL) in diffe
Externí odkaz:
https://doaj.org/article/ce030cb2b25d4b98808e455c0a0d945a
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Neste trabalho são apresentadas a preparação, a metodologia adotada para a nucleação de nanopartículas (NPs) de prata e a investigação das propriedades luminescentes do sistema vítreo GeO2-PbO dopado com íons de túlio e codopado com íons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8974e4bf71542ef8b7076ae3c572404e
https://doi.org/10.11606/d.3.2010.tde-18082010-163909
https://doi.org/10.11606/d.3.2010.tde-18082010-163909
Autor:
Marcos I. Alayo, Ernesto Jimenez-Villar, Thiago A. A. de Assumpção, Niklaus Ursus Wetter, Diego S. da Silva, Luciana R. P. Kassab
Publikováno v:
Synthesis and Photonics of Nanoscale Materials XV.
This paper reports for, the first time, the influence of silicon nanocrystals on the photoluminescence and optical gain of Yb 3p /Er 3p codoped Bi 2 O 3 −GeO 2 waveguides for amplification at 1542 nm. Pedestal waveguides were fabricated by RF- sput
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08f5ecd7cf3377b48d0845d3ac2b4268
https://doi.org/10.1117/12.2291326
https://doi.org/10.1117/12.2291326
Autor:
Cid B. de Araújo, Diego S. da Silva, Luciana R. P. Kassab, Giordano B. C. de Simone, Thiago A. A. de Assumpção
Publikováno v:
Applied Physics B. 121:117-121
Enhanced photoluminescence (PL) in a tellurite glass (TeO2–ZnO) doped with erbium ions (Er3+) and containing silicon nanocrystals (Si-NCs) is reported. The PL increase is mainly attributed to energy transfer from excited Si-NCs to the Er3+ located
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3741839649bbf0c3fa47d3861decc7c6
https://doi.org/10.1007/s00340-015-6207-9
https://doi.org/10.1007/s00340-015-6207-9
Autor:
A.O. Fedorchuk, Diego S. da Silva, Thiago A. A. de Assumpção, Kazimierz Jerzy Plucinski, Mauricio Eiji Camilo, Luciana R. P. Kassab
Publikováno v:
Optical Materials. 38:28-32
We report the first observation of the laser stimulated piezoelectricity in Er 3+ doped GeO 2 –Bi 2 O 3 glasses containing silicon nanocrystals, prepared using the simple well known melt quenching technique. Two split beams originated from the same
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfea41e31670b2d4540f7d27859adb6c
https://doi.org/10.1016/j.optmat.2014.09.025
https://doi.org/10.1016/j.optmat.2014.09.025
Autor:
Thiago Alexandre Alves de Assumpção, Maria Elisia Armas Alvarado, Marco Isaias Alayo Chavez, Luciana Reyes Pires Kassab
Publikováno v:
Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Made available in DSpace on 2015-03-18T15:55:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-07-01 National Institute of Photonics (INCT Project) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) This work explores the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ee105ec5002d42926e35cb9a28878d0
https://doi.org/10.1139/cjp-2013-0591
https://doi.org/10.1139/cjp-2013-0591
Publikováno v:
Journal of Alloys and Compounds. 586:S516-S519
Infrared-to-visible frequency upconversion (UC) in Nd3+-doped PbO–GeO2 (PGO) glasses containing silver nanoparticles (NPs) was investigated. The excitation was made at 805 nm, in resonance with the Nd3+ transition 4I9/2 → 4F5/2. Photoluminescence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83f3594f8a3e228ea0e24804bc982890
https://doi.org/10.1016/j.jallcom.2012.12.070
https://doi.org/10.1016/j.jallcom.2012.12.070
Publikováno v:
ECS Transactions. 31:237-242
Red, green and blue (RGB) emissions related to frequency upconversion and energy transfer process in Er3+/Tm3+/Yb3+ doped tellurite glass under 980 nm excitation are reported. The intense blue (480 nm), green (525 and 550 nm) and red (650 nm) emissio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f223352c77588bfe81b8a26f5f748787
https://doi.org/10.1149/1.3474165
https://doi.org/10.1149/1.3474165
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
O trabalho em questão mostra a possibilidade de produção de guias de onda por meio de filme finos de GeO2-PbO codopados com Tm3+/Yb3+, com e sem nanopartículas (NPs) de ouro, a partir da técnica de RF Magnetron Sputtering. Foram usados nos proce