A high-Tc intrinsic Josephson junction emitter tunable from 0.5 to 2.4 terahertz

T Kashiwagi, K Sakamoto, H Kubo, Y Shibano… - Applied Physics …, 2015 - pubs.aip.org
Strong, monochromatic, coherent and continuous terahertz (THz) radiation was generated
from the intrinsic Josephson junctions in a cylindrical stand-alone mesa sandwich structure …

The present status of high-Tc superconducting terahertz emitters

T Kashiwagi, H Kubo, K Sakamoto… - Superconductor …, 2017 - iopscience.iop.org
A terahertz (THz) wave emitter using the stack of intrinsic Josephson junctions present in the
high-T c superconductor Bi 2 Sr 2 CaCu 2 O 8+ δ (Bi2212) has been developed. By applying …

Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-Tc superconductor Bi2Sr2CaCu2O8+ δ

DP Cerkoney, C Reid, CM Doty… - Journal of Physics …, 2016 - iopscience.iop.org
We study the transverse magnetic (TM) electromagnetic cavity mode wave functions for an
ideal equilateral triangular microstrip antenna (MSA) exhibiting C 3v point group symmetry …

Improved excitation mode selectivity of high-Tc superconducting terahertz emitters

T Kashiwagi, T Yuasa, Y Tanabe, T Imai… - Journal of applied …, 2018 - pubs.aip.org
Using our recent design of thermally managed sandwich device structures, we studied the
radiation frequency characteristics of three such devices of the same rectangular …

Circularly polarized terahertz radiation monolithically generated by cylindrical mesas of intrinsic Josephson junctions

A Elarabi, Y Yoshioka, M Tsujimoto, I Kakeya - Applied Physics Letters, 2018 - pubs.aip.org
We report emissions of circular polarized electromagnetic waves from cylindrically shaped
mesa structures of the high-temperature superconductor Bi 2 Sr 2 CaCu 2 O 8+ δ. The …

Polarization analysis of terahertz emission from Bi-2212 cross-whisker intrinsic Josephson junction devices and their refractive index

Y Saito, I Kakeya, Y Takano - Applied Physics Letters, 2022 - pubs.aip.org
Polarization analyses of the terahertz (THz) emission from Bi 2 Sr 2 CaCu 2 O 8+ δ whisker
crystals used for superconducting THz emitters were conducted. The THz emission mode …

Terahertz emission from the intrinsic Josephson junctions of high-symmetry thermally-managed Bi2Sr2CaCu2O8+ δ microstrip antennas

RA Klemm, AE Davis, QX Wang… - IOP Conference …, 2017 - iopscience.iop.org
We show for high-symmetry disk, square, or equilateral triangular thin microstrip antennas of
any composition respectively obeying C∞ v, C 4v, and C 3v point group symmetries, that the …

Fourcross shaped metamaterial filters fabricated from high temperature superconducting YBCO and Au thin films for terahertz waves

Y Demirhan, H Alaboz, MA Nebioğlu… - Superconductor …, 2017 - iopscience.iop.org
In this study, we present a new, unique fourcross shaped metamaterial terahertz (THz) filter
fabricated from both gold thin films and YBa 2 Cu 3 O 7− d high T c superconducting thin …

Investigation of wet etching solutions and method for thicker stand alone type of mesa structures of Bi2212 single crystals

T Imai, T Kashiwagi, S Nakagawa… - Japanese Journal of …, 2021 - iopscience.iop.org
In order to develop terahertz emitting devices based on high temperature superconductor
Bi2212, we explored a simple and easy fabrication process of the stand alone type of mesa …

Metal mesh filters based on Ti, ITO and Cu thin films for terahertz waves

Y Demirhan, H Alaboz, L Ozyuzer, MA Nebioğlu… - Optical and Quantum …, 2016 - Springer
In this study, we have investigated the spectral performance of resonant terahertz (THz)
bandpass filters which were produced from thin films with a metal-mesh shape. The …