Optical V(z) for high-resolution 2π surface plasmon microscopy

Michael Geoffrey Somekh, S. G. Liu, T. S. Velinov, C. W. See

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)


Surface plasmons are electromagnetic surface waves whose k vectors are greater than that of free-space radiation. We excite surface plasmons by using an oil-immersion lens, which forms one arm of an interferometer. We demonstrate the way in which the characteristic output variation with defocus is determined by the propagation properties of the surface plasmons, which leads to diffraction-limited surface plasmon microscopy in the far field.
Original languageEnglish
Pages (from-to)823-825
Number of pages3
JournalOptics Letters
Issue number11
Publication statusPublished - 1 Jun 2000
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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