Polarization conversion spectroscopy of hybrid modes

TL;DR

This paper introduces a novel hybrid-mode spectroscopy method based on enhanced polarization conversion in reflection, improving detection sensitivity by exploiting peaks in converted reflectance spectra in anisotropic guiding structures.

Contribution

It presents a new spectroscopy technique utilizing polarization conversion peaks for hybrid modes, distinct from traditional reflection dips, applicable in anisotropic media.

Findings

Enhanced polarization conversion observed in Otto and Kretschmann configurations

Converted reflectance spectrum peaks correlate with hybrid-mode excitation

Method improves detection sensitivity over traditional techniques

Abstract

Enhanced polarization conversion in reflection for the Otto and Kretschmann configurations is introduced as a new method for hybrid-mode spectroscopy. Polarization conversion in reflection appears when hybrid-modes are excited in a guiding structure composed of at least one anisotropic media. In contrast to a dark dip, in this case modes are associated to a peak in the converted reflectance spectrum, increasing the detection sensitivity and avoiding confusion with reflection dips associated with other processes as can be transmission.