Results 71 to 80 of about 6,307 (338)

Measurements of the time-jitter of coherent terahertz synchrotron radiation with a superconducting detector [PDF]

, 2012
We have applied an ultrafast superconducting YBa2Cu3O7-δ (YBCO) detector to study the time jitter of the propagating electron bunches in a synchrotron. The jitter was determined from the coherent terahertz (THz) synchrotron radiation (CSR)
Hoehl, Arne, Pohl, Andreas, Ulm, Gerhard, Müller, Ralph, Feikes, Jörg, Hofherr, Matthias, Semenov, Alexej, Wüstefeld, Godehard, Hübers, Heinz-Wilhelm, Scheuring, Alexander, Probst, Petra, Ilin, Konstantin, Ries, Markus, Wünsch, Stefan   +13 more
core  

Terahertz Direct Detection in YBa2Cu3O7 Microbolometers [PDF]

, 2011
A high sensitivity broadband terahertz direct detector based on YBa2Cu3O7 high-Tc superconductor microbolometers is presented. At 77 K, the responsivity of the spiral antenna-integrated microbolometers (1.5 um x 1.5 um) is 190 V/W, referenced to the ...
Cherednichenko, Serguei, Arvid Hammar, Vladimir Drakinskiy, Stake, Jan,, Cherednichenko, Serguei,, Drakinskiy, Vladimir,, Bevilacqua, Stella, Hammar, Arvid,, Bevilacqua, Stella,, Drakinskiy, Vladimir, Stake, Jan, Hammar, Arvid, Sergey Cherednichenko, Stella Bevilacqua, Jan Stake   +14 more
core   +1 more source

All-Dielectric Meta-lens Designed for Photoconductive Terahertz Antennas

IEEE Photonics Journal, 2017
We present an all-dielectric meta-lens designed to collimate terahertz waves emitted from a terahertz antenna. The meta-lens is not only thinner than a conventional bulk silicon lens, but also promises to eliminate the use of parabolic mirrors in a ...
Qing Yu, Jianqiang Gu, Quanlong Yang, Ying Zhang, Yanfeng Li, Zhen Tian, Chunmei Ouyang, Jiaguang Han, John F. OHara, Weili Zhang   +9 more
doaj   +1 more source

Dipole‐Engineered Conductive Additives for Ultrastable Interphase Evolution in High‐Areal‐Capacity Silicon Anodes

Advanced Functional Materials, EarlyView.
In the work reported herein, dipole‐engineered sulfonated carbon nanofibers enable conductive additives to actively regulate interphase formation in silicon anodes. Polar sulfonyl groups guide electrolyte decomposition to form a compact LiF‐rich interphase while promoting robust integration with silicon.
Song Kyu Kang, Hyeonju Kim, Jeongbin Cho, Minseon Park, Taehun Kim, Seonghun Sin, Won Bae Kim   +6 more
wiley   +1 more source

Real-Time 0.89 THz Terahertz Imaging with High-Electron-Mobility Transistor Detector and Hydrogen Cyanide Laser for Non-Destructive Nut Detection

Micromachines
We present a method for real-time terahertz imaging that employs a hydrogen cyanide (HCN) laser as a terahertz source at 0.89 THz and an AlGaN/GaN high-electron-mobility transistor (HEMT) terahertz detector as a camera.
Nu Zhang, Haiqing Liu, Huihui Yan, Hongbei Wang, Jiaxing Xie, Yinxian Jie, Damao Yao   +6 more
doaj   +1 more source

Terahertz optical machine learning for object recognition

APL Photonics, 2020
We demonstrate an optical machine learning method in the terahertz domain, which allows the recognition of objects within a single measurement. As many materials are transparent in the terahertz spectral region, objects hidden within such materials can ...
B. Limbacher, S. Schoenhuber, M. Wenclawiak, M. A. Kainz, A. M. Andrews, G. Strasser, J. Darmo, K. Unterrainer   +7 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Describing broadband terahertz response of graphene FET detectors by a classical model [PDF]

, 2020
Direct power detectors based on field-effect transistors are becoming widely used for terahertz applications. However, accurate characterization at terahertz frequencies of such detectors is a challenging task. The high-frequency response is dominated by
Jeppson, Kjell,, Jeppson, Kjell, Yang, Xinxin, Yang, Xinxin,, Vorobiev, Andrei,, Stake, Jan, Stake, Jan,, Vorobiev, Andrei   +7 more
core   +1 more source

Terahertz Meta-Holograms Reconstruction Based on Compressed Sensing

IEEE Photonics Journal, 2020
The introduction of single-pixel imaging and compressed sensing (CS) techniques into terahertz (THz) imaging has sped up image acquisition and avoided raster scanning. At present, most single-pixel terahertz imaging developments are based on simple metal
Mengyuan Hu, Zhen Tian, Xieyu Chen, Xingye Yang, Zhihao Yi, Qiu Wang, Chunmei Ouyang, Jianqiang Gu, Jiaguang Han, Weili Zhang   +9 more
doaj   +1 more source

Real-time terahertz imaging for art conservation science [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
A new real-time terahertz imaging system has been developed by using a quantum cascade laser source and a microbolometer focal plane detector array. The application to non-invasive analyses of cultural heritage is demonstrated with an oil paint specimen.
Fukunaga K., Sekine N., Hosako I., Oda N., Yoneyama H., Sudoh T.   +5 more
doaj   +1 more source