Focusing of light beyond the diffraction limit of half the wavelength

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28 Citations (Scopus)

Abstract

The diffraction limit sets the smallest achievable linewidth at half the wavelength. With a subwavelength plasmonic lens allowing one to reduce the diffraction via an asymmetry and to generate and squeeze the wave functions, an incident light is focused by the aperture to a single line with its width smaller than the limited value in the intermediate zone. The focused fields are capable of propagating in free space. This light focusing process, besides being of academic interest, is expected to open up a wide range of application possibilities.

Original languageEnglish
Pages (from-to)3763-3765
Number of pages3
JournalOptics Letters
Volume35
Issue number22
DOIs
Publication statusPublished - 2010 Nov 15

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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