Now showing items 1-4 of 4
Grafeno em substratos transparentes dielétricos para aplicações fotônicas
(Universidade Presbiteriana Mackenzie, 2017-05-04)
Graphene is a two-dimensional material composed of carbon atoms arranged in a hexagonal lattice with excellent electronic properties, such as high electron mobility, and optical properties, such as wavelength-independent ...
Geração e propagação de pulsos em laser a fibra dopada com Érbio com cavidades ultralongas
(Universidade Presbiteriana Mackenzie, 2012-11-01)
We investigated the mechanisms responsible for pulse formation and evolution in Erbium-doped fiber lasers with cavity lengths varying from 16.4 m to 100.8 km that were actively mode-locked at repetition rate of 1 GHz. The ...
Dissulfeto de molibdênio esfoliado micromecanicamente depositado em fibra óptica para geração de pulsos ultracurtos
(Universidade Presbiteriana Mackenzie, 2016-08-01)
In this work, we describe the characterization, transfer process and fabrication of mechanically exfoliated MoS2 (molybdenum disulfide) samples deposited on the fiber facet and D-shaped fiber. The characterization of ...
Nanocompósito de óxido de grafeno e nanopartículas metálicas para espectroscopia raman amplificada por superfície (SERS)
(Universidade Presbiteriana Mackenzie, 2017-01-24)
Light interaction with the electronic cloud of metallic nanoparticles at frequencies that are resonant with the natural oscillation frequency of the cloud is known to excite localized surface plasmons. This phenomenon is ...