Results 291 to 300 of about 219,971 (340)

THz channel modeling: Consolidating the road to THz communications

China Communications, 2021
For the sake of meeting the demand of data rates at terabit (Tbit) per second scale in future networks, the terahertz (THz) band is widely accepted as one of the potential key enabling technologies for next generation wireless communication systems. With
Shanyun Liu, Xianbin Yu, Rongbin Guo, Yajie Tang, Zhifeng Zhao   +4 more
semanticscholar   +1 more source

Nonlinear THz‐Nano Metasurfaces

Advanced Functional Materials, 2021
Extreme terahertz (THz) science and technologies, the next disruptive frontier in nonlinear optics, provide multifaceted capabilities for exploring strong light‐matter interactions in a variety of physical systems. However, current techniques involve the
T. Dong, Shaoxian Li, Manukumara Manjappa, Peidi Yang, Jiangping Zhou, Deyin Kong, Baogang Quan, Xieyu Chen, Ouyang Chen, Fei Dai, Jiaguang Han, C. Ouyang, Xueqian Zhang, Junjie Li, Yang Li, J. Miao, Yutong Li, Li Wang, Ranjan Singh, Weili Zhang, Xiaojun Wu   +20 more
semanticscholar   +1 more source

THz communications and relations to frequency domain THz spectroscopy

2019 15th International Conference on Telecommunications (ConTEL), 2019
This paper presents an overview of THz-technologies, and especially their use for communications. Different approaches on the physics of THz radiation are discussed, from the Radio Frequency (RF) perspective, as well as from the Far Infrared (FIR) optic signals’ perspective and Nano electronics’ and molecular electronics’ perspective.
Peter Planinsic, Blaz Pongrac, Dusan Gleich   +2 more
openaire   +1 more source

THz High Field Generation, THz Coherent Spectroscopy, and THz Coherent Control

Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007
THz pulses with over ten microjoules of energy are generated and used to drive nonlinear material responses. Nonlinear THz coherent spectroscopy and coherent control are illustrated.
Ka-Lo Yeh, Matthias C. Hoffmann, János Hebling, Keith A. Nelson   +3 more
openaire   +1 more source

THz Transceiver with 6.5 THz Bandwidth

2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2019
A terahertz (THz) transceiver, containing emitter and receiver on a compact single chip, simplifies reflection measurements in THz time-domain spectroscopy (TDS) considerably [1]. This is because a collinear geometry allows for variable working distances and increases alignment tolerances.
Robert B. Kohlhaas, Simon Nellen, Lars Liebermeister, Steffen Breuer, Martin Schell, Bjorn Globisch   +5 more
openaire   +1 more source

THz and sub‐THz quantum cascade lasers

Laser & Photonics Reviews, 2009
AbstractIn this paper we review recent progress in obtaining laser action from semiconductor quantum cascade structures covering the low THz region of the electromagnetic spectrum, from 2 THz (λ ≃ 155 μm) down to the sub‐THz region (λ > 300 μm).
G. Scalari, C. Walther, M. Fischer, R. Terazzi, H. Beere, D. Ritchie, J. Faist   +6 more
openaire   +1 more source

Broadband THz filters for THz sensing devices

2012 IEEE National Aerospace and Electronics Conference (NAECON), 2012
We propose a broadband filter using multi-layered frequency selective surfaces (FSS) for terahertz (THz) sensing devices. These types of filter windows are required to be placed in front of THz sensors to increase signal-to-noise ratio and reduce sensor sensitivity to mid IR and visible light.
Varittha Sanphuang, Niru K. Nahar, John L. Volakis   +2 more
openaire   +1 more source

Interference Between Coherences at 384 THz and 386.1 THz in Rb Observed at 2.1 THz

Frontiers in Optics + Laser Science 2023 (FiO, LS), 2023
Interference between coherences established at 384 and 386 THz in atomic Rb (5d5/2- 5p3/2 and 5p3/2-5s1/2, respectively) is observed at the 2.1 THz difference frequency. Interaction between the two coherences is observed in the spectral domain in the form of a Fano resonance, and the characteristics of the coupled oscillator are described.
Thomas Reboli, J. Gary Eden
openaire   +1 more source

Sub-THz/THz amplification in a semiconductor superlattice

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015
We examine the feasibility of amplification of the electromagnetic signal in semiconductor superlattice by moving charge domains, which are generated in superlattice by applied DC bias. We show that an external resonator connected to the semiconductor superlattice significantly broadens the frequency range of amplified signals to the higher harmonics ...
A. E. Hramov, V. V. Makarov, A. A. Koronovskii, K. N. Alekseev, V. A. Maximenko, N. S. Frolov, M. T. Greenaway, T. M. Fromhold, O. I. Moskalenko, A. G. Balanov   +9 more
openaire   +1 more source

THz photomixers: an overview

SPIE Proceedings, 2006
The paper reviews the state-of-the-art in high-frequency photodetectors for THz generation and compares optical heterodyne THz generation with existing electrical and optical approaches.
Stöhr, Andreas, Jäger, Dieter
openaire   +1 more source