Monolithic superconducting emitter of tunable circularly polarized terahertz radiation
arXiv:1711.01375 · doi:10.1103/PhysRevApplied.8.064034
Abstract
We propose an approach to control the polarization of terahertz (THz) radiation from intrinsic Josephson-junction stacks in single crystalline high-temperature superconductor . By monolithically controlling the surface current distributions in the truncated square mesa structure, we can modulate the polarization of the emitted THz wave as a result of two orthogonal fundamental modes excited inside the mesa. Highly polarized circular terahertz waves with a degree of circular polarization of more than 99% can be generated using an electrically controlled method. The emitted radiation has a high intensity and a low axial ratio (AR<1 dB). The intuitive results obtained from the numerical simulation based on the conventional antenna theory are consistent with the observed emission characteristics.
arXiv commentSubmitted to PRApplied
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Cited by in corpus (6)
- Mutually synchronized macroscopic Josephson oscillations demonstrated by polarization analysis of superconducting terahertz emitters
- Terahertz emission from mutually synchronized standalone Bi2Sr2CaCu2O8+x intrinsic-Josephson-junction stacks
- Wave functions for high-symmetry, thin microstrip antennas and two-dimensional quantum boxes
- Polarization analysis of terahertz emission from Bi-2212 cross-whisker intrinsic Josephson junction and its refractive index
- Transient Joule- and (ac) Josephson-like photon emission in one- and two- nucleon tunneling processes between superfluid nuclei: blackbody and coherent spectral functions
- On-chip sensing of hotspots in superconducting terahertz emitters