Localization and channeling of light in defect modes of two-dimensional photonic crystals |
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Authors: | A. M. Zheltikov S. A. Magnitskii A. V. Tarasishin |
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Affiliation: | (1) M. V. Lomonosov Moscow State University, 119899 Moscow, Russia |
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Abstract: | The spatial distribution of the electromagnetic field in a two-dimensional photonic crystal with a lattice defect is investigated. It is shown that in such a structure the field can be localized in a region smaller than one wavelength in size. The dependence of the spectrum of defect modes on the parameters of a two-dimensional photonic crystal is investigated. The light field at the exit of the photonic crystal possesses properties of a nonradiative mode, making it possible to achieve spatial resolution in the near-field much higher than the radiation wavelength. The possibilities of using this phenomenon in optical near-field microscopy to produce optical memory devices and to increase the efficiency of nonlinear optical interactions are discussed. Pis’ma Zh. éksp. Teor. Fiz. 70, No. 5, 323–328 (10 September 1999) |
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