Phase-sensitive detection of dipole radiation in a fiber-based high numerical aperture optical system

A. N. Vamivakas, S. B. Ippolito, A. K. Swan, M. S. Ünlü, M. Dogan, E. R. Behringer, B. B. Goldberg

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We theoretically study the problem of detecting dipole radiation in a fiber-based confocal microscope of high numerical aperture. By using a single-mode fiber, in contrast to a hard-stop pinhole aperture, the detector becomes sensitive to the phase of the field amplitude. We find that the maximum in collection efficiency of the dipole radiation does not coincide with the optimum resolution for the light-gathering instrument. The derived expressions are important for analyzing fiber-based confocal microscope performance in fluorescence and spectroscopic studies of single molecules and/or quantum dots.

Original languageEnglish (US)
Pages (from-to)970-972
Number of pages3
JournalOptics Letters
Volume32
Issue number8
DOIs
StatePublished - Apr 15 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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