title: Analysis of the THz response of a simple periodic graphite-based structure.
abstract: We report the observation of the dichroism effect in simple wire grid structures made of graphite on a paper substrate, i.e. we investigate the feasibility of drawing polarizers for the THz band using conventional graphite-based lead pencils. The displacement of the maximum frequency of the selective absorption phenomenon by varying the wire pitch hints at a polarizing behavior. Measurements of the maximum and minimum of transmission efficiency, extinction ratio and degree of polarization are carried out with a transmission fiber THz-TDS setup. Experimental results show a 9 dB extinction ratio for an inexpensive (<1$) home-made component.
authors.forename: M P M
authors.initials: MP
authors.lastname: Colleoni
authors.forename: B
authors.initials: B
authors.lastname: Vidal
mesh_terms: D005583:Fourier Analysis; D006108:Graphite / Q000737:chemistry*; D055068:Terahertz Spectroscopy
chemical_list: D006108:Graphite