Zobrazeno 1 - 10
of 81
pro vyhledávání: '"G. Heliotis"'
Autor:
C.W. Jeon, Erdan Gu, Donal D. C. Bradley, Paul N. Stavrinou, C. Griffin, G. Heliotis, Martin D. Dawson
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 8:S445-S449
We report the use of light-emitting conjugated polymer materials to wavelength-convert the emission from a two-dimensional array of micropixellated InGaN light-emitting diodes (LEDs). We demonstrate hybrid organic/inorganic light-emitting devices tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f567cf24f3e374550b40634ac34ce42
https://doi.org/10.1088/1464-4258/8/7/s20
https://doi.org/10.1088/1464-4258/8/7/s20
Autor:
Emmanouel Varvarigos, V. Katopodis, I. Lazarou, Konstantinos Yiannopoulos, G. Heliotis, D. Klonidis, Hercules Avramopoulos, Paraskevas Bakopoulos, P. Dimos, Konstantinos Christodoulopoulos, Ioannis Tomkos
Publikováno v:
CAMAD
We present a coverage capability analysis for a multi-wavelength passive optical network architecture that is designed for supporting broadband xDSL access. The analysis takes into account the physical layer impairments of optical fibers and componen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1cbd8cdeab9332002f646254032e440
https://doi.org/10.1109/camad.2014.7033204
https://doi.org/10.1109/camad.2014.7033204
Autor:
G. Heliotis, Mariano Campoy-Quiles, Ruidong Xia, Donal D. C. Bradley, K.S Whitehead, Paul N. Stavrinou
Publikováno v:
Synthetic Metals. 155:274-278
We report significant improvements in the optical gain properties of highly oriented films of the fluorene-based conjugated polymer poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT). We demonstrate amplified spontaneous emission (ASE) in optically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05e52ac10b12b91c58c0b0c50842aa0e
https://doi.org/10.1016/j.synthmet.2005.09.004
https://doi.org/10.1016/j.synthmet.2005.09.004
Autor:
Pablo G. Etchegoin, Mariano Campoy-Quiles, Donal D. C. Bradley, G. Heliotis, Ruidong Xia, M. Ariu, Martina Pintani
Publikováno v:
Advanced Functional Materials. 15:925-933
Variable-angle spectroscopic ellipsometry (VASE) has been applied to five polyfluorene gain media. The ellipsometric data have been analyzed using an electronic model based on critical points of zero dimension, i.e., an exciton model. The optical con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b225659581fd9f791c792198d953c6b
https://doi.org/10.1002/adfm.200400121
https://doi.org/10.1002/adfm.200400121
Autor:
Ifor D. W. Samuel, Donal D. C. Bradley, Ruidong Xia, G. Heliotis, Piers Andrew, William L. Barnes, Graham A. Turnbull
Publikováno v:
Journal of Applied Physics. 96:6959-6965
We report the fabrication of widely tuneable (627–702nm) optically pumped two-dimensional distributed feedback polymer lasers that utilize a red-emission fluorene copolymer as the active gain medium. The lasers exhibit efficient, low threshold oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9b1433df447197d0f47c99a82cb3bca
https://doi.org/10.1063/1.1811374
https://doi.org/10.1063/1.1811374
Semiconducting polyfluorenes as materials for solid-state polymer lasers across the visible spectrum
Publikováno v:
Synthetic Metals. 140:117-120
We report a detailed study of the gain properties of three polyfluorenes: poly(9,9-dioctylfluorene- co -9,9-di(4-methoxyphenyl)fluorene (F8DP), poly(9,9-dioctylfluorene- co -benzothiadiazole) (F8BT), and a Dow proprietary copolymer, Dow Red F. The em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6434add8441974981108a1c7927181d
https://doi.org/10.1016/s0379-6779(03)00235-2
https://doi.org/10.1016/s0379-6779(03)00235-2
Autor:
Ruidong Xia, William L. Barnes, G. Heliotis, Piers Andrew, Graham A. Turnbull, Donal D. C. Bradley, Ifor D. W. Samuel
Publikováno v:
Advanced Functional Materials. 14:91-97
We report the fabrication of optically pumped solid-state polymer lasers based on the semiconducting polymer poly(9,9-dioctylfluorene) (PFO) using resonator structures that offer one- and two-dimensional distributed feedback. The lasers are readily f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb2d082e30e3c6da2f5e4b7cfa128c67
https://doi.org/10.1002/adfm.200305504
https://doi.org/10.1002/adfm.200305504
Autor:
Ifor D. W. Samuel, Ruidong Xia, K.S Whitehead, G. Heliotis, Graham A. Turnbull, Donal D. C. Bradley
Publikováno v:
Synthetic Metals. 139:727-730
We report a study of the amplified spontaneous emission (ASE) in highly oriented films of dioctyl substituted polyfluorene (PFO). We demonstrate amplification of blue light via ASE measurements on optically pumped aligned PFO planar asymmetric wavegu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e79032bbb5dc71fb10a9e567976cd16a
https://doi.org/10.1016/s0379-6779(03)00236-4
https://doi.org/10.1016/s0379-6779(03)00236-4
Publikováno v:
Organic Electronics. 4:165-177
We report a detailed investigation of the optical gain properties of a series of semiconducting polyfluorenes with photoluminescence emission spectra that span the entire visible spectrum. Stimulated emission was demonstrated at low pump pulse energi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97901ae351a336d5d1efadf7d480b304
https://doi.org/10.1016/j.orgel.2003.08.009
https://doi.org/10.1016/j.orgel.2003.08.009
Publikováno v:
Canadian Journal of Physics. 78:509-519
We present results related to the PMMA organic polymer laser ablation for several values of the energy flux of the XeCl laser. These results seem to support the model of volume superheating, which is associated with bubble creation, bubble associatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7760223ce9223fabc8e89d754bf3fe7
https://doi.org/10.1139/p00-024
https://doi.org/10.1139/p00-024