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Revista mexicana de física
Print version ISSN 0035-001X
Abstract
RODRIGUEZ-ZURITA, G.; VAZQUEZ-CASTILLO, J. and PEDRAZA-CONTRERAS, J.. Multiple beam interference with near-grazing waves in dielectric wedges: polarization dependence. Rev. mex. fis. [online]. 2004, vol.50, n.5, pp.462-470. ISSN 0035-001X.
Multiple beam interference of near-grazing waves has been recognized as responsible for bright interference patterns in dielectric wedges. Near-grazing waves are traveling waves having wave vectors forming an angle of nearly π/2 with the normal of a planar surface. When two such surfaces form a wedge with near-grazing waves within, two main features determine interference pattern formation. First, the values of the Fresnel reflection coefficients are close to unity for near-grazing waves. Second, the phase dependence as a function of the gap between surfaces is step-wise nearly constant for the same kind of waves. Both features have polarization dependence, so polarization dependence of interference patterns are also expected. Numerical results for s and p polarizations are presented under monochromatic and polychromatic illuminations. Experimental observations are also shown.
Keywords : Interference; polarization; dielectric interfaces.