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arXiv · 1502.00728

Diffraction-free optical beam propagation with near-zero phase variation in extremely anisotropic metamaterials

Lei Sun·Xiaodong Yang·Wei Wang·Jie Gao
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Abstract

Extremely anisotropic metal-dielectric multilayer metamaterials are designed to have the effective permittivity tensor of a transverse component (parallel to the interfaces of the multilayer) with zero real part and a longitudinal component (normal to the interfaces of the multilayer) with ultra-large imaginary part at the same wavelength, including the optical nonlocality analysis based on the transfer-matrix method. The diffraction-free deep-subwavelength optical beam propagation with near-zero phase variation in the designed multilayer stack due to the near-flat iso-frequency contour is demonstrated and analyzed, including the effects of the multilayer period and the material loss.

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Lei Sun, Xiaodong Yang, Wei Wang, Jie Gao. 2015-02-03. Diffraction-free optical beam propagation with near-zero phase variation in extremely anisotropic metamaterials. https://doi.org/10.1088/2040-8978%2F17%2F3%2F035101

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