Polarisation of THz synchrotron radiation: from its measurement to control
Abstract
Polarisation analysis of synchrotron THz radiation was carried out with a standard stretched polyethylene polariser and revealed that the linearly polarised (horizontal) component contributes up to 22 +/- 5% to the circular polarised synchrotron emission extracted by a gold-coated mirror with a horizontal slit inserted near a bending magnet edge. Comparison with theoretical predictions shows a qualitative match with dominance of the edge radiation. Grid polarisers 3D-printed out of commercial acrilic resin were tested for the polariser function and showed spectral regions where the dichroic ratio DR > 1 and < 1 implying importance of molecular and/or stress induced anisotropy. Metal-coated 3D-printed THz optical elements can find a range of applications in intensity and polarisation control of THz beams.
Keywords
Cite
@article{arxiv.1707.01578,
title = {Polarisation of THz synchrotron radiation: from its measurement to control},
author = {Meguya Ryu and Denver Linklater and William Hart and Armandas Balcytis and Edvinas Skliutas and Mangirdas Malinauskas and Dominique Appadoo and Yaw-Ren Eugene Tan and Junko Morikawa and Saulius Juodkazis},
journal= {arXiv preprint arXiv:1707.01578},
year = {2017}
}
Comments
8 figures