Results 131 to 140 of about 246,481 (370)

Bias current and temperature dependence of polarization dynamics in spin-lasers with electrically tunable birefringence

AIP Advances, 2020
We investigate and compare the intensity and polarization dynamics in a vertical-cavity surface-emitting laser (VCSEL) with a monolithically integrated, electrically controlled birefringence tuning mechanism.
M. Lindemann, N. Jung, P. Stadler, T. Pusch, R. Michalzik, M. R. Hofmann, N. C. Gerhardt   +6 more
doaj   +1 more source

Twenty years of terahertz imaging [Invited].

Optics Express, 2018
The birth of terahertz imaging approximately coincides with the birth of the journal Optics Express. The 20th anniversary of the journal is therefore an opportune moment to consider the state of progress in the field of terahertz imaging.
D. Mittleman
semanticscholar   +1 more source

Spin‐Polarized Antiferromagnets for Spintronics

Advanced Materials, EarlyView.
This review highlights recent advances in anomalous and spin transport phenomena in spin‐polarized antiferromagnets. Key effects—including the anomalous Hall, Nernst, and magneto‐optical effects—are discussed across various antiferromagnetic platforms.
Zhenzhou Guo, Xiaotian Wang, Wenhong Wang, Gang Zhang, Xiaodong Zhou, Zhenxiang Cheng   +5 more
wiley   +1 more source

High‐Performance Phototransistor Based on a 2D Polybenzimidazole Polymer

Advanced Materials, EarlyView.
A crystalline 2D polybenzimidazole polymer (2DPBI), incorporating a porphyrin‐based π‐system linked via 1,3‐diazole units, is synthesized on the water surface over large areas. The 2DPBI thin‐film exhibits high charge carrier mobility (≈240 cm2 V−1 s−1, measured by terahertz spectroscopy), strong photoresponse, and band‐like transport, enabling ...
Anupam Prasoon, Preetam Dacha, Heng Zhang, Elif Unsal, Mike Hambsch, Alexander Croy, Shuai Fu, Nguyen Ngan Nguyen, Kejun Liu, Haoyuan Qi, Sein Chung, Minyoung Jeong, Lei Gao, Ute Kaiser, Kilwon Cho, Hai I. Wang, Renhao Dong, Gianaurelio Cuniberti, Mischa Bonn, Stefan C. B. Mannsfeld, Xinliang Feng   +20 more
wiley   +1 more source

High-brightness terahertz beams characterized with an ultrafast detector [PDF]

, 1989
Martin van Exter, Ch. Fattinger, D. Grischkowsky   +2 more
openalex   +1 more source

Stimuli‐Responsive Low‐Frequency Terahertz Absorption ON‐OFF Switchability in Spin‐Crossover Material

Advanced Materials, EarlyView.
A switchable Fe(II)–Hg(II) coordination polymer exhibits reversible ON‐OFF terahertz (THz) absorption through temperature‐ and light‐induced spin‐crossover. The material shows strong, tunable THz responses linked to phonon modes around Fe(II) centers, supported by spectroscopic measurements and calculations.
Guanping Li, Olaf Stefanczyk, Kunal Kumar, Laurent Guérin, Kazuki Nakamura, Maryam Alashoor, Lulu Xiong, Koji Nakabayashi, Kenta Imoto, Yuiga Nakamura, Sumit Ranjan Maity, Guillaume Chastanet, Nicholas F. Chilton, Shin‐ichi Ohkoshi   +13 more
wiley   +1 more source

Ultra-wideband terahertz fingerprint enhancement sensing and inversion model supported by single-pixel reconfigurable graphene metasurface

PhotoniX
The molecular fingerprint sensing technology based on metasurface has unique attraction in the biomedical field. However, in the terahertz (THz) band, existing metasurface designs based on multi-pixel or angle multiplexing usually require more analyte ...
Bingwei Liu, Yan Peng, YuFan Hao, Yiming Zhu, Shengjiang Chang, Songlin Zhuang   +5 more
doaj   +1 more source

Terahertz quantum beats in molecular liquids [PDF]

, 1987
R. Leonhardt, W. B. Holzapfel, Wolfgang Zinth, W. Kaiser   +3 more
openalex   +1 more source

Heterostructure terahertz devices [PDF]

Journal of Physics: Condensed Matter, 2008
The terahertz (THz) range of frequencies is borderline between microwave electronics and photonics. It corresponds to the frequency bands of molecular and lattice vibrations in gases, fluids, and solids. The importance of the THz range is in part due to numerous potential and emerging applications which include imaging and characterization, detection ...
openaire   +3 more sources

Plasmonic‐Strain Engineering of Quantum Emitters in Hexagonal Boron Nitride

Advanced Materials Interfaces, EarlyView.
Hexagonal boron nitride (hBN) defects attract interest for single‐photon emission in quantum technologies. This study presents an hBN‐gold nanocone platform to engineer emission centers. The findings reveal emission overlap with gold fluorescence, complicating attribution.
Anuj Kumar Singh, Utkarsh, Pablo Tieben, Kishor Kumar Mandal, Brijesh Kumar, Rishabh Vij, Amrita Majumder, Ikshvaku Shyam, Shagun Kumar, Kenji Watanabe, Takashi Taniguchi, Venu Gopal Achanta, Andreas W. Schell, Anshuman Kumar   +13 more
wiley   +1 more source