2005/08/30 by Sergey Savel’ev, Sergey Savel'ev, V. A. Yampol’skiı̆ +8
Physics and Astronomy · #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #Superconducting and THz Device Technology #Superconductivity (cond-mat.supr-con) #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0508722
4 pages, 2 figures, originally submitted to PRL
arxiv created 2005/08/30 · openalex publication_date 2005/08/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We propose how to control the THz radiation generated by fast moving Josephson vortices in spatially modulated (either along the c-axis or the ab-plane) samples of Bi-2212 and related superconducting compounds. We show that the JVs moving in a subset of weaker junctions can generate out-of-ab-plane and outside-the-cone Cherenkov radiation. The ab-plane modulation of superconducting properties (achieved, for instance, by ion irradiation lithography) can result in transition radiation within certain frequency windows, i.e., allowing the design of tunable THz emitters and THz photonic crystals.