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arXiv · 1609.08473

Leveraging beam deformation to improve the detection of resonances

Rémi Pollès·Martine Mihailovic·Emmanuel Centeno·Antoine Moreau
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Abstract

Decades of work on beam deformation on reflection, and especially on lateral shifts, have spread the idea that a reflected beam is larger than the incident beam. However, when the right conditions are met, a beam reflected by a multilayered resonant structure can be 10\% narrower than the incoming beam. Such an easily measurable change occurs on a very narrow angular range close to a resonance, which can be leveraged to improve the resolution of sensors based on the detection of surface plasmon resonances by a factor three. We provide theoretical tools to deal with this effect, and a thorough physical discussion that leads to expect similar phenomenon to occur for temporal wavepackets and in other domains of physics.

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Rémi Pollès, Martine Mihailovic, Emmanuel Centeno, Antoine Moreau. 2016-09-27. Leveraging beam deformation to improve the detection of resonances. https://doi.org/10.1103/physreva.94.063808

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