Effect of Slab Interfaces on Diffraction of Visible Light by a Thick Volume Grating |
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Authors: | SA Maksimenko |
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Affiliation: | Institute of Nuclear Problems , 220050, Minsk, The Republic of Belarus |
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Abstract: | Abstract A theory of visible light diffraction by a volume grating is given for the case when reflection at slab interfaces cannot be neglected. A method of approximate solution of the second-order coupled-wave equations, applicable over a wide range of the grating vector orientation, is proposed. An appropriate boundary-value problem is discussed and solved in the two-wave approximation. The results are analytical and expressed in matrix notation suitable for both transmission and reflection diffraction gratings. Particular attention is given to the diffraction regime that arises in a slanted grating under the total internal reflection of the diffracted wave (TIRDW). Strong transmission anomalies occurring in the vicinity of the TIRDW threshold are established and analysed. |
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