Related Experiment Video
Updated: May 10, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Enhanced fluorescence emission using a photonic crystal coupled to an optical cavity
Anusha Pokhriyal1, Meng Lu, Vikram Chaudhery
1Department of Physics, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA.
Abstract:
All fluorescent assays would benefit from greater signal-to-noise ratios (SNRs), which enable detection of disease biomarkers at lower concentrations for earlier disease diagnosis and detection of genes that are expressed at the lowest levels. Here, we report an approach to enhance fluorescence in which surface adsorbed fluorophore-tagged biomolecules are excited on a photonic crystal surface that is coupled to an underlying Fabry-Perot type cavity through a gold mirror reflector beneath the photonic crystal. This approach leads to 6× increase in signal-to-noise ratio of a dye labeled polypeptide compared to ordinary photonic crystal enhanced fluorescence.
Related Concept Videos
Photoluminescence: Applications
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Super-resolution Fluorescence Microscopy
Fluorescence and Phosphorescence: Instrumentation
Variables Affecting Phosphorescence and Fluorescence

