Polarization rotation of shape resonance in Archimedean spiral slots
Journal
Applied Physics Letters
Journal Volume
94
Journal Issue
9
Date Issued
2009
Author(s)
Abstract
The experimental results of linear polarized light transmitting through an array of Archimedean spiral slots perforated on a thin metal film in the far-infrared region are demonstrated. The wavelength selective transmission spectra are examined, and the polarization selective shape resonance will lead to the polarization rotation. The sign of rotation not only depend on the handedness of the spiral but also related to specific initial polarization position. This phenomenon is different from the conventional optical activity in three-dimensional chiral molecules but rather similar to the polarization selective features in rectangular or elliptical slots.
Type
journal article