On The Electromagnetic Theory Of Wire Gratings Used In The Infrared

R. Petit; J. Y. Suratteau; M. Cadilhac

doi:10.1117/12.944832

12 December 1984 On The Electromagnetic Theory Of Wire Gratings Used In The Infrared

R. Petit, J. Y. Suratteau, M. Cadilhac

Proceedings Volume 0503, Application, Theory, and Fabrication of Periodic Structures, DiffractionGratings, and Moire Phenomena II; (1984) https://doi.org/10.1117/12.944832
Event: 28th Annual Technical Symposium, 1984, San Diego, United States

Abstract

In infrared technology, most of transmission gratings are used in the resonance domain (their spacing is of the same order that the wavelength of the incident light). Under such circumstances, the polarization takes a prominent part in the determination of the efficiencies. We have to take into account the vectorial character of light and therefore we must abandon the scalar theories of Optics to use electromagnetic theories derived from Maxwell equations. In other words, there is a need for efficient numerical techniques capable of solving rigorously the problem of perfectly conducting wire gratings. The approximate methods proposed by Marcuwitz in the Waveguide Handbook (Mac Graw Hill, New York, 1951) seem now unable to answer all the questions the experimenters asked for. In this paper we report on two completely different methods called H.M. (Hamiltonian method) and B.F.M. (Bessel function method) that we have recently implemented on a IBM 3081 computer.

Citation Download Citation

R. Petit, J. Y. Suratteau, and M. Cadilhac "On The Electromagnetic Theory Of Wire Gratings Used In The Infrared", Proc. SPIE 0503, Application, Theory, and Fabrication of Periodic Structures, DiffractionGratings, and Moire Phenomena II, (12 December 1984); https://doi.org/10.1117/12.944832

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