Ray picture of diffraction gratings |
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Authors: | Alfredo Luis Luis Miguel Sanchez-Brea |
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Affiliation: | Departamento de Óptica, Facultad de Ciencias F?´sicas, Universidad Complutense, 28040 Madrid, Spain |
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Abstract: | We elaborate on a geometrical picture of diffraction gratings. Exact paraxial propagation including coherence effects is obtained by allowing the geometrical rays to transport Wigner function instead of simply specific intensity. We apply this formalism to perfect and less than perfect gratings, illuminated by plane and Gaussian waves. |
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Keywords: | 42.25.Kb 42.15.&minus i 42.25.Fx 42.25.Hz |
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