MODELAGEM NUMERICA DE FEIXES ÓPTICOS GERADOS POR CADEIAS DE FENDAS CIRCULARES

• Ano de defesa: 2009
• Autor(a) principal: Nascimento, Eduardo Henrique Albuquerque do
• Orientador(a): FEITOSA, Carlos Alberto Carneiro
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Maranhão
• Programa de Pós-Graduação: PROGRAMA DE PÓS-GRADUAÇÃO EM FÍSICA/CCET
• Departamento: FISICA
• País: BR
• Palavras-chave em Português: Óptica; Interferência; Difração; Cadeia de fendas
• Palavras-chave em Inglês: Optics; Interference; Diffraction; Chain of cracks
• Área do conhecimento CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::OTICA
• Link de acesso: http://tedebc.ufma.br:8080/jspui/handle/tede/716

The proposal of this work is the beam study generated for diffraction in arrangements of some circular cracks, called here of chains. These chains can be opened or closed and the circular cracks to have its centers located throughout a curve generator that will define the format of the chain. If the centers of the circular cracks will be distributed throughout a circumference, the chain is called circular chain and the curve generator will be the circumference. The chains of cracks also can be formed by cracks of different rays and can periodically be organized. Another important aspect of the circular chains of cracks is the possibility to introduce a defect in the chain. These defects can excessively be cracks with a different diameter of or the absence of a crack. The diffraction can be affected by the presence of random in the arrangement of the cracks. Circular chains of cracks can contain random in the ray of the circumference generator, in the position of the centers and the rays of the circular cracks. In the case of concentrical chains the centers of the chains can be distributed randomly. In the case of formed chains for more than a circular type of crack, these cracks can randomly be organized throughout the circumference generator. These possibilities can occur simultaneously in an arrangement of circular cracks. In this work was carried through the numerical study of the diffraction for circular chains of circular cracks, periodic, with defects and random that if they intercept in a point.