Elimination of phase singularity to achieve superresolution in lossy metamaterials

Kwangchil Lee, Youngjean Jung, Willie J. Padilla, Kyoungsik Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The presence of absorption losses softens the singular behavior of transmission resonances and leads to a good image in spite of limited effective spatial frequency range. Nonetheless, we found that the phase singularity does not disappear despite the considerably reduced retardation effects by softening the transmission resonances. Because the phase singularity severely deteriorates the ideal image reconstruction, broad transmission bandwidth in spatial frequency domain is not sufficient enough to achieve superresolution in TiO 2 thin film lens. The present work predicts successful elimination of the phase singularity and the achievement of ∼ λ/12.9 superresolution in TiO2 thin film lens through the phase correction method.

Original languageEnglish
Pages (from-to)12269-12276
Number of pages8
JournalOptics Express
Issue number12
Publication statusPublished - 2010 Jun 7

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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