Interaction of light with absorbing crystal plates

Joseph A. Giordmaine

M. Khanbekyan, L. Knöll, D.‐G. Welsch

Propagation of nonclassical light through a dispersing and absorbing multilayer dielectric plate is studied using the theory of quantization of the electromagnetic field in causal dielectric media. 3D input-output relations is derived, describing the medium by a stepwise constant, complex permittivity that satisfies the Kramers-Kronig relations and allowing for arbitrary additional atomic sources.

M. Khanbekyan, L. Knöll, D.‐G. Welsch

A. V. Shubnikov

Martin E. V. Pedersen, Lars Søgaard Rishøj, Henrik Steffensen +2 more

Slow-light enhanced optical detection in liquid-infiltrated photonic crystals is theoretically studied. Using a scattering-matrix approach and the Wigner–Smith delay time concept, we show that optical absorbance benefits both from slow-light phenomena as well as a high filling factor of the energy residing in the liquid. Utilizing strongly dispersive photonic crystal structures, we numerically demonstrate how liquid-infiltrated photonic crystals facilitate enhanced light–matter interactions, by potentially up to an order of magnitude. The proposed concept provides strong opportunities for improving existing miniaturized absorbance cells for optical detection in lab-on-a-chip systems.

J. C. Webber