Polarization modulation time-domain terahertz polarimetry
Optics
2017-07-26 v1 Materials Science
Strongly Correlated Electrons
Instrumentation and Detectors
Abstract
We present high precision measurements of polarization rotations in the frequency range from 0.1 to 2.5 THz using a polarization modulation technique. A motorized stage rotates a polarizer at ~80 Hz, and the resulting modulation of the polarization is measured by a lock-in technique. We achieve an accuracy of 0.05{\deg} (900 {\mu}rad) and a precision of 0.02{\deg} (350 {\mu}rad) for small rotation angles. A detailed mathematical description of the technique is presented, showing its ability to fully characterize elliptical polarizations from 0.1 to 2.5 THz.
Cite
@article{arxiv.1203.5019,
title = {Polarization modulation time-domain terahertz polarimetry},
author = {C. M. Morris and R. Valdés Aguilar and A. V. Stier and N. P. Armitage},
journal= {arXiv preprint arXiv:1203.5019},
year = {2017}
}
Comments
15 pages, 3 figures, submitted to Optics Express