1 Department of Photonics Engineering, Technical University of Denmark2 Plasmonics and Metamaterials, Department of Photonics Engineering, Technical University of Denmark3 Teraherts Technologies and Biophotonics, Department of Photonics Engineering, Technical University of Denmark4 Fudan University5 Center for Nanostructured Graphene, Center, Technical University of Denmark6 Fudan University
In this work a new design aimed to perform as a half-wavelength plate in the terahertz regime is presented. The fabricated samples exhibit a phase difference of 180 degrees at 0.73 THz between the two principal polarizations that matches with the modelling results. The experimentally determined transmittances of the two polarisations were around 61%, which is below theoretical predictions of reaching more than 90%. The difference between the two results is explained and possibilities for increasing the transmittance are presented.
Applied Physics a, 2015, Vol 119, Issue 2, p. 467-473