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10 September 2010 Super-lensing effect of TiO2 NFSL in the mid IR regime
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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