Abstract
Polarization of light is a fundamental characteristic which represents the oscillation of electric fields in electromagnetic optics. The utilization of polarization gives opportunities to analyze the light-matter interaction or improve the performance of optical devices. Miniaturization of polarimeter consisting of bulky optical components is an important challenge for applying to integrated photonic chips or sensors. In this letter, we propose a compact plasmonic polarimeter with six different plasmonic lenses for detecting Stokes parameters in near field. Each plasmonic lens, which focuses plasmonic fields under the specific polarization incidence, can be designed by pairs of nanoslit with different configurations. We theoretically and numerically show that the intensities of plasmonic focal spots can derive full Stokes parameter. We expect that the proposed work can contribute to miniaturization and integration of polarimeter.
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