L
L. Dal Negro
Researcher at University of Trento
Publications - 18
Citations - 3038
L. Dal Negro is an academic researcher from University of Trento. The author has contributed to research in topics: Silicon & Photonics. The author has an hindex of 12, co-authored 18 publications receiving 2977 citations.
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Journal ArticleDOI
Optical gain in silicon nanocrystals
TL;DR: It is demonstrated that light amplification is possible using silicon itself, in the form of quantum dots dispersed in a silicon dioxide matrix, which opens a route to the fabrication of a silicon laser.
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Optical gain in silicon nanocrystals
TL;DR: In this article, the authors report measurements of stimulated emission and single pass light amplification in Si nanocrystals obtained by ion implantation and argue that population inversion involves SiO interface states.
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Applicability conditions and experimental analysis of the variable stripe length method for gain measurements
TL;DR: In this article, the validity of the variable stripe length (VSL) method to measure optical gain in semiconductor materials was discussed and the main experimental as well as conceptual difficulties arising when the VSL method is barely applied to low gain materials such as silicon nanocrystals (Si-nc) devised in a planar waveguide geometry.
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Stimulated emission in plasma-enhanced chemical vapour deposited silicon nanocrystals
L. Dal Negro,Massimo Cazzanelli,Nicola Daldosso,Zeno Gaburro,Lorenzo Pavesi,Francesco Priolo,Domenico Pacifici,Giorgia Franzò,Fabio Iacona +8 more
TL;DR: In this article, a variable stripe length (VSL) method was used to measure the optical gain of silicon nanocrystals formed by thermal annealing at 1250°C of SiO x films.
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Silicon nanostructures for photonics
Paolo Bettotti,Massimo Cazzanelli,L. Dal Negro,B. Danese,Zeno Gaburro,Claudio J. Oton,G. Vijaya Prakash,Lorenzo Pavesi +7 more
TL;DR: In this paper, the authors showed that low-dimensional silicon exhibits light amplification characteristics, non-linear optical effects, photon confinement in both one and two dimensions, photon trapping with evidence of light localization, and gas-sensing properties.