Subwavelength fractional Talbot effect in layered heterostructures of composite metamaterials

Physics – Optics

Scientific paper

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To be published in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.74.036612

We demonstrate that under certain conditions, fractional Talbot revivals can occur in heterostructures of composite metamaterials, such as multilayer positive and negative index media, metallodielectric stacks, and one-dimensional dielectric photonic crystals. Most importantly, without using the paraxial approximation we obtain Talbot images for the feature sizes of transverse patterns smaller than the illumination wavelength. A general expression for the Talbot distance in such structures is derived, and the conditions favorable for observing Talbot effects in layered heterostructures is discussed.

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