A Translational Polarization Rotator
Abstract
We explore a free-space polarization modulator in which a variable phase introduction between right- and left-handed circular polarization components is used to rotate the linear polarization of the outgoing beam relative to that of the incoming beam. In this device, the polarization states are separated by a circular polarizer that consists of a quarter-wave plate in combination with a wire grid. A movable mirror is positioned behind and parallel to the circular polarizer. As the polarizer-mirror distance is separated, an incident linear polarization will be rotated through an angle that is proportional to the introduced phase delay. We demonstrate a prototype device that modulates Stokes Q and U over a 20% bandwidth, from 77 to 94 GHz.
Cite
@article{arxiv.1206.2284,
title = {A Translational Polarization Rotator},
author = {David T. Chuss and Edward J. Wollack and Giampaolo Pisano and Sheridan Ackiss and Kongpop U-Yen and Ming wah Ng},
journal= {arXiv preprint arXiv:1206.2284},
year = {2014}
}
Comments
13 pages, 6 figures, submitted to Applied Optics