title: Terahertz surface plasmon polariton coupling on metallic gratings.
abstract: Terahertz time-domain spectroscopy is used to study the nature and efficiency of coupling between surface plasmon polaritons and free-space terahertz radiation by metallic gratings made from brass rods and a grooved aluminum plate. Reflection and transmission mode measurements indicate very rapid coupling and decoupling with > 70% efficiency after accounting for scattering. Results indicate a good match to theoretical coupling frequencies within the accuracy of the experimental setup.
authors.forename: John
authors.initials: J
authors.lastname: O'Hara
authors.forename: R
authors.initials: R
authors.lastname: Averitt
authors.forename: A
authors.initials: A
authors.lastname: Taylor