Small volume excitation and enhancement of dye fluorescence on a 2D photonic crystal surface

Opt Express. 2010 Feb 15;18(4):3693-9. doi: 10.1364/OE.18.003693.

Abstract

We demonstrate an easy-to-implement scheme for fluorescence enhancement and observation volume reduction using photonic crystals (PhCs) as substrates for microscopy. By normal incidence coupling to slow 2D-PhC guided modes, a 65 fold enhancement in the excitation is achieved in the near field region (100 nm deep and 1 microm wide) of the resonant mode. Such large enhancement together with the high spatial resolution makes this device an excellent substrate for fluorescence microscopies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Contrast Media / analysis
  • Contrast Media / chemistry*
  • Crystallization / methods*
  • Fluorescent Dyes / analysis
  • Fluorescent Dyes / chemistry*
  • Image Enhancement / methods*
  • Microscopy, Fluorescence / methods*
  • Surface Properties

Substances

  • Contrast Media
  • Fluorescent Dyes