title: High-Q terahertz bandpass filters based on coherently interfering metasurface reflections.
abstract: We present compact and easy-to-realize terahertz bandpass filters with Q values in the order of 500. The filters are based on coherently interfering reflections from two parallel metasurfaces applied to the boundaries of a semiconductor disk. By changing the thickness of the semiconductor disk and the dimensions of the metasurface structures, the filter can be optimized for various terahertz frequencies. Moreover, a precise tuning of the resonance frequency is possible via the temperature of the structure or its angle with respect to the propagation direction.
authors.affiliation: Faculty of Physics and Material Sciences Center, Philipps-Universität Marburg, Marburg, Germany. norman.born@physik.uni‑marbirg.de
authors.forename: Norman
authors.initials: N
authors.lastname: Born
authors.forename: Marco
authors.initials: M
authors.lastname: Reuter
authors.forename: Martin
authors.initials: M
authors.lastname: Koch
authors.forename: Maik
authors.initials: M
authors.lastname: Scheller