Inverting scattered fields for sub-wavelength resolution using negative index metamaterials

Y. Zhang; M. A. Fiddy

doi:10.1117/12.873986

28 February 2011 Inverting scattered fields for sub-wavelength resolution using negative index metamaterials

Y. Zhang, M. A. Fiddy

Proceedings Volume 7946, Photonic and Phononic Properties of Engineered Nanostructures; 79460V (2011) https://doi.org/10.1117/12.873986
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Sub-wavelength resolution using a negative index metamaterial appears to be severely limited in practice, particularly due to material losses. We present some numerical studies on what high spatial frequency information about a thin and a thick object can be obtained, assuming multiple scattering and coupling between evanescent and propagating waves. Weak scattering approximations cannot be assumed as scattering features reduce in size and become subwavelength in nature making an inverse scattering approach necessary in order to relate the measured superresolved field to object index or permittivity fluctuations. We discuss the relationship between the field in the object and image domains and discuss possible procedures for recovering subwavelength index fluctuations from measured data.

Citation Download Citation

Y. Zhang and M. A. Fiddy "Inverting scattered fields for sub-wavelength resolution using negative index metamaterials", Proc. SPIE 7946, Photonic and Phononic Properties of Engineered Nanostructures, 79460V (28 February 2011); https://doi.org/10.1117/12.873986

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