Super-lensing effect of TiO2 NFSL in the mid IR regime

Kwangchil Lee; Youngjean Jung; Kyoungsik Kim

doi:10.1117/12.860255

10 September 2010 Super-lensing effect of TiO₂ NFSL in the mid IR regime

Kwangchil Lee, Youngjean Jung, Kyoungsik Kim

Proceedings Volume 7754, Metamaterials: Fundamentals and Applications III; 77541F (2010) https://doi.org/10.1117/12.860255
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

Recently, the near-field superlens (NFSL) has been used as a suitable material for the super-resolution beyond the diffraction limits. These NFSL materials in the nature, such as metals and polar dielectric crystals, usually have intrinsic absorption loss in the Re(ε) < 0 region. In the imaging system, such absorption loss decreases the retardation effects by softening the singularity of transmission resonances, but it does not remove the phase singularity that severely deteriorates the ideal image restoration. Because of this problem, TiO₂ thin film cannot still have sufficient band of spatial frequency for the super-resolution in the mid IR regime. In this research, we report the achievement super-resolution in TiO₂ NFSL by elimination of the phase singularity based on the phase correction method.

Citation Download Citation

Kwangchil Lee, Youngjean Jung, and Kyoungsik Kim "Super-lensing effect of TiO₂ NFSL in the mid IR regime", Proc. SPIE 7754, Metamaterials: Fundamentals and Applications III, 77541F (10 September 2010); https://doi.org/10.1117/12.860255

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