Nonlinear Optical Media
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. PROPRIEDADES ÓPTICAS NÃO LINEARES DE CLUSTERS DO BC5
The first (β) and second (γ) hyperpolarizabilities of BC5 clusters were investigated through the PM6, PM3, and MNDO-d semiempirical Hamiltonians. The Im2, Imm2, P3m1, and P phases that are pointed out in literature as likely candidates of the BC5 superhard diamondlike real structure were investigated. In this way, the stability analysis of the BC5 clusters
Quím. Nova. Publicado em: 2016-08
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2. Formação de sólitons em condensados de Bose-Einstein e em meios ópticos / Formation of solitons in Bose-Einstein condensates and in photorefractive media
Different kinds of solitons have already been observed in various nonlinear optical media, and their behavior has been explained in the frameworks of such mathematical models as the nonlinear Schrödinger and generalized nonlinear Shrödinger equations for different dimensions and geometries. However, there are situations when many solitons are generated so
Publicado em: 2010
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3. Bi-estabilidade óptica &condensação de Bose-Einstein de polaritons
Optical bistability e®ects (OB) are intrinsically related to the gain media non-linearities. In microcavities, this behavior is due to Kerr effect proportionate by polariton number, generated resonantly in strong -coupling regime, instead of the photon number. The sample was held in a cold-finger cryostat at a temperature of 10K and is constituted by two DB
Publicado em: 2008
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4. Desenvolvimento de um WebLab para estudo de efeitos não-lineares em fibras ópticas
O advento da Internet e o desenvolvimento das Tecnologias da Informação e Comunicação (TICs) geraram novos espaços para a comunicação e colaboração entre grupos de pessoas localizadas em regiões geograficamente distintas. A associação da tecnologia Web com a automação e controle de instrumentos por computador tornou possível o desenvolvimento
Publicado em: 2007
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5. Propagação de Campos Eletromagnéticos em Meios Materiais Finitos
In this thesis, the electromagnetism in material media is considered. It starts from the Macroscopic Maxwell Equations assuming that the fields have a temporal dependence that can be expressed by a Fourier transform. The conservation of the energy, linear momentum and angular momentum are studied from a general point of view. By taking the temporal average o
Publicado em: 2006
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6. Propagação de Campos Eletromagnéticos em Meios Materiais Finitos
In this thesis, the electromagnetism in material media is considered. It starts from the Macroscopic Maxwell Equations assuming that the fields have a temporal dependence that can be expressed by a Fourier transform. The conservation of the energy, linear momentum and angular momentum are studied from a general point of view. By taking the temporal average o
Publicado em: 2006
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7. Efeitos nÃo lineares em lÃquidos orgÃnicos e meios nanoestruturados
In this thesis, we report studies of nonlinear transverse effects in organic liquids, carbon disulfide (CS2) and dimetil sulfoxide (DMSO), and of fluorescent emission effects in nanostructured media, more specifically, frequency upconversion in erbium doped barium titanate nanocrystals (BaTiO3:Er3+) and laserlike emission from inverted opal nanostructure of
Publicado em: 2004