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arXiv · 0710.3653

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

M. E. V. Pedersen·L. S. Rishoj·H. Steffensen·S. Xiao·N. A. Mortensen
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Abstract

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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M. E. V. Pedersen, L. S. Rishoj, H. Steffensen, S. Xiao, N. A. Mortensen. 2007-10-19. Slow-light enhanced optical detection in liquid-infiltrated photonic crystals. https://doi.org/10.1007/s11082-007-9123-3

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