Slow-light enhanced optical detection in liquid-infiltrated photonic crystals

Details Slow-light enhanced optical detection in liquid-infiltrated photonic crystals Slow-light enhanced optical detection in liquid-infiltrated photonic crystals

2007-10-19

arxiv.org/abs/0710.3653v1

Opt. Quant. Electron. 39, 903 (2007).

Physics

Optics

Paper accepted for the "Special Issue OWTNM 2007" edited by A. Lavrinenko and P. J. Roberts

Scientific paper

10.1007/s11082-007-9123-3

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.

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