Results 131 to 140 of about 6,307 (338)

A cryogen-free HTS Josephson junction detector for terahertz imaging [PDF]

, 2015
A cryogen-free terahertz (THz) imaging system based on a high-temperature superconducting (HTS) Josephson junction detector is reported. The detector was made of a YBa2Cu3O7-x step-edge Josephson junction and integrated into an on-chip thin-film antenna.
Smart, K, Li, L, Li, X. D., Du, J., Foley, CP, Wang, D. H.C., Smart, K., Hanham, Stephen; id_orcid, Ji, F, Zeng, D. Z., Du, J, Li, XD, Foley, C. P., Hanham, SM, Wang, DHC, Ji, F., Leslie, KE, Zeng, DZ, Leslie, K. E., Li, L.   +19 more
core   +1 more source

Tunable High‐Performance Metamaterial Filters Based on Novel SRR Architectures

Advanced Science, EarlyView.
Based on two novel SRR configurations and two independent SRR integration approaches, four tunable bandpass metamaterial filters were fabricated with an ultra‐thin ceramic substrate. Among them, SM‐2 achieves over 97% electromagnetic wave transmittance, with a minimal 1.15% deviation in its resonant frequency prediction, making them promising ...
Lingxi Qu, Liya Zheng, Ruopeng Liu, Chunlin Ji, Bin Li   +4 more
wiley   +1 more source

Nanostructured photoconductive terahertz detector for near-field microscopy [PDF]

, 2016
We demonstrate that a nanostructured terahertz (THz) photoconductive detector enables sampling of THz fields localized on micrometer scale. The nanostructure, consisting of an optical nanoantenna array and a distributed Bragg reflector, acts as a hybrid ...
Igal Brener, Ting Shan Luk, Oleg Mitrofanov, Robert J. Thompson, Tom Siday, John L. Reno, Siday, Tom; id_orcid, Reno, John L., Thompson, Robert J., Brener, Igal, Mitrofanov, Oleg, Luk, Ting Shan   +11 more
core   +1 more source

Research on Direct Detection Method and Performance of Single-photon Counting Terahertz Radar

Leida xuebao
The conventional terahertz radar suffers from limited operation range for long-distance, noncooperative target detection due to the low transmitter power and atmospheric attenuation effect, both of which pose a hindrance in meeting the requirements of ...
Kang LIU, Hongxuan WU, Jun YI, Hongqiang WANG, Chenggao LUO   +4 more
doaj   +1 more source

Microdisk array based Weyl semimetal nanofilm terahertz detector. [PDF]

Nanophotonics, 2022
Song Q, Zhou Z, Zhu G, Liang H, Zhang M, Zhang B, Liu F, Yan P.   +7 more
europepmc   +1 more source

Concurrent Terahertz Spin Excitations and Phase Shift Control in Fe4Nb2O9: A Material for Synergizing Computation and Communication Technologies

Advanced Science, EarlyView.
A multifunctional terahertz (THz) platform is demonstrated, in a model material Fe4Nb2O9, exhibiting a large intrinsic THz phase shift alongside distinct THz magnon excitations in its antiferromagnetic phase. This coexistence of phase modulation and spin dynamics offers a promising pathway toward integrated THz communication and magnonic computation ...
Brijesh Singh Mehra, Karan Datt Sharma, Sanjeev Kumar, Gaurav Dubey, Mitanshi Gupta, Ravi Shankar Singh, Dibakar Roy Chowdhury, Christine Martin, Antoine Maignan, Kiran Singh, Dhanvir Singh Rana   +10 more
wiley   +1 more source

State-of-the-Art Room Temperature Operable Zero-Bias Schottky Diode-Based Terahertz Detector Up to 5.56 THz. [PDF]

Sensors (Basel), 2023
Yadav R, Ludwig F, Faridi FR, Klopf JM, Roskos HG, Preu S, Penirschke A.   +6 more
europepmc   +1 more source

Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters

Advanced Science, EarlyView.
This work quantifies optical‐pump‐induced THz transmission variations to reveal electron and lattice temperature dynamics and presents time‐resolved THz spectral maps for sub‐picosecond analysis. A 63 ± 8 fs time lag between THz emission and laser excitation is identified, serving as an intrinsic parameter limiting the upper frequency of spintronic THz
Yifan Wang, Zuanming Jin, Miao Cai, Zhiqiang Lan, Zhenjie Ge, Zheng Feng, Wei Tan, Alexei V. Balakin, Alexander P. Shkurinov, Yan Peng, Yiming Zhu   +10 more
wiley   +1 more source

Influence of Substrate Material on Radiation Characteristics of THz Photoconductive Emitters

International Journal of Antennas and Propagation, 2015
We present in this paper spectral and spatial characteristics of terahertz emission from standard dipole antenna structures used as emitters depending on the substrate material.
Jens Klier, Garik Torosyan, Nina Susan Schreiner, Daniel Molter, Frank Ellrich, Wissem Zouaghi, Emilien Peytavit, Jean-François Lampin, René Beigang, Joachim Jonuscheit, Georg von Freymann   +10 more
doaj   +1 more source

A Novel Terahertz Detector Based on Asymmetrical FET Array in 55-nm Standard CMOS Process. [PDF]

Materials (Basel), 2022
Liu Y, Zhang X, Sun J, Tong L, Kong L, Deng T.   +5 more
europepmc   +1 more source