Large polarization change in two-dimensional metallic photonic crystals in subterahertz region
- 21 April 2003
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 82 (16), 2568-2570
- https://doi.org/10.1063/1.1567458
Abstract
Interesting polarizationcharacteristics of two-dimensional metallic photonic crystals (2D-MPC) in the subterahertz region have been found. We measured the temporal wave form of the THz wave transmitted thorough the 2D-MPC using a THz time domain spectroscopic system. The linear polarization of the incident THz wave transmitted through the 2D-MPC becomes elliptical with a slight tilting of the incident angle from the normal incidence. This result indicates that the 2D-MPC behaves not only as a band-pass filter already reported, but also as a wave plate. This large polarization change is attributed to the strong TE–TM polarization mixing in the 2D-MPC.Keywords
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