TY - JOUR
T1 - Frequency detection of focused sub-THz waves using a high-Tc Josephson junction
AU - Miyadera, T.
AU - Kawayama, I.
AU - Kiwa, T.
AU - Tsukada, K.
AU - Tonouchi, M.
N1 - Funding Information:
This work was supported in part by the SCOPE program from the Ministry of Internal Affairs and Communications, and a Grant-in-Aid for Scientific Research (B) No. 13555107 from the Japan Society for the Promotion of Science.
PY - 2005
Y1 - 2005
N2 - We have proposed a new type of frequency detection system of sub-terahertz electromagnetic waves using a photomixing technique and a Josephson junction detector. The photomixer illuminated by two lasers with different wavelengths generates coherent electromagnetic waves that include a frequency component corresponding to the frequency difference of the two lasers. The generated electromagnetic waves were radiated from a horn antenna and focused to the Josephson junction detector with Si lens. The high-Tc Josephson junction operates as a frequency detector for electromagnetic waves. Using this system, we observed the Shapiro steps of 188 μV that correspond to the frequencies of 90.8 GHz.
AB - We have proposed a new type of frequency detection system of sub-terahertz electromagnetic waves using a photomixing technique and a Josephson junction detector. The photomixer illuminated by two lasers with different wavelengths generates coherent electromagnetic waves that include a frequency component corresponding to the frequency difference of the two lasers. The generated electromagnetic waves were radiated from a horn antenna and focused to the Josephson junction detector with Si lens. The high-Tc Josephson junction operates as a frequency detector for electromagnetic waves. Using this system, we observed the Shapiro steps of 188 μV that correspond to the frequencies of 90.8 GHz.
KW - Josephson junction
KW - Photomixing
KW - Shapiro step
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U2 - 10.1016/j.physc.2005.02.136
DO - 10.1016/j.physc.2005.02.136
M3 - Conference article
AN - SCOPUS:25444488236
SN - 0921-4534
VL - 426-431
SP - 1726
EP - 1730
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - II
T2 - Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -