Enhanced Transmission of Terahertz Radiation through Periodically Modulated Slabs of Layered Superconductors

Abstract

We predict the enhanced transmissivity of modulated slabs of layered superconductors for terahertz radiation due to the diffraction of the incident wave and the resonance excitation of the eigenmodes. The electromagnetic field is transferred from the irradiated side of a slab of layered superconductor to the other one by excited waveguide modes (WGMs) which do not decay deep into the slab, contrary to metals, where the enhanced light transmission is caused by the excitation of the evanescent surface waves. We show that a series of resonance peaks (with $T\sim 1$) can be observed in the dependence of the transmittance $T$ on the varying incidence angle $\theta$, when the dispersion curve of the diffracted wave crosses successive dispersion curves for the WGMs.

arXiv comment5 pages, 3 figures; submitted to PRL

References in corpus (4)

• Crossing lattices, vortex chains, and angular dependence of melting line in layered superconductors
• Terahertz Josephson plasma waves in layered superconductors: spectrum, generation, nonlinear, and quantum phenomena
• The London theory of the crossing-vortex lattice in highly anisotropic layered superconductors
• Optical Properties of Layered Superconductors near the Josephson Plasma Resonance