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6G无线通信thz电子学、光子学、等离子体波器件及应用的新进展(续)

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微纳电子技术 2024年第7期61卷 1-17页

作者：赵正平中国电子科技集团有限公司北京100846 固态微波器件与电路全国重点实验室石家庄050051

移动通信技术已成为现代智能信息网络发展的带动的重要技术之一。继sub-6 GHz和毫米波频段的5G移动通信成为当今移动通信的发展主流之后,预计以亚thz/thz频段的6G移动通信将于2030年到来。综述了用于未来6G无线通信的thz电子学、光子学... 详细信息

移动通信技术已成为现代智能信息网络发展的带动的重要技术之一。继sub-6 GHz和毫米波频段的5G移动通信成为当今移动通信的发展主流之后,预计以亚thz/thz频段的6G移动通信将于2030年到来。综述了用于未来6G无线通信的thz电子学、光子学、等离子体波器件及应用的新进展。综述并分析了当今thz器件与电路以及典型应用的关键技术的发展现状与趋势,包含真空电子领域的行波管、碰撞雪崩渡越时间(IMPATT)二极管、thz谐振隧穿二极管(RTD)、thz肖特基势垒二极管(SBD)、thz CMOS、thz SiGe BiCMOS、thz InP HEMT/InP HBT、D波段GaN HEMT、光子学辅助的太赫兹波技术、石墨烯为代表的二维材料器件与电路。thz器件的应用创新重点包含四个方面:通道测量与建模、多输入多输出(MIMO)天线阵列、智能可重构反射阵列以及通信局域网络架构和实验平台。

关键词： 6G无线通信 thz thz电子学 thz光子学 thz等离子体波器件

Triple-Band Metamaterial Inspired Antenna for Future Terahertz(thz)Applications

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Computers, Materials & Continua 2022年第7期72卷 1071-1087页

作者： Adel Y.I.Ashyap S.Alamri S.H.Dahlan Z.Z.Abidin M.Inam Abbasi Huda A.Majid M.R.Kamarudin Y.A.Al-Gumaei M.Hashim Dahri Center for Applied Electromagnetic(EMCenter) Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn Malaysia(UTHM)Batu Pahat86400JohorMalaysia Faculty of Engineering Electrical Engineering Dep. Al Baha UniversityAlaqiq65799Al-BahaSaudi Arabia Advanced Telecommunication Research Center(ATRC) Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn Malaysia(UTHM)Batu Pahat86400JohorMalaysia Faculty of Electrical and Electronic Engineering Technology Universiti Teknikal Malaysia MelakaHang Tua Jaya76100Durian TunggalMelakaMalaysia Department of Mathematics Physicsand Electrical EngineeringNorthumbria UniversityNE18ST Newcastle Upon TyneUK Department of Electronic Engineering Dawood University of Engineering and TechnologyKarachi74800Pakistan

For future healthcare in the terahertz(thz)band,a triple-band microstrip planar antenna integrated with metamaterial(MTM)based on a polyimide substrate is *** frequencies of operation are 500,600,and 880 *** triple-band capability is accomplished by etching metamaterial on the patch without affecting the overall antenna *** of a partial ground plane,a full ground plane is used as a buffer to shield the body from back radiation emitted by the *** overall dimension of the proposed antenna is 484×484μm^(2).The antenna’s performance is investigated based on different crucial factors,and excellent results are *** gain for the frequencies 500,600,880GHz is 6.41,6.77,10.1 dB,respectively while the efficiency for the same frequencies is 90%,95%,96%,*** research has been conducted by mounting the presented antenna on a single phantom layer with varying dielectric *** results show that the design works equally well with and without the phantom model,in contrast to a partially ground antenna,whose performance is influenced by the presence of the phantom *** a result,the presented antenna could be helpful for future healthcare applications in the thz band.

关键词： thz metamaterial triple-band wireless body area networks(WBAN)

Intense broadband thz generation from femtosecond laser filamentation

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Chinese Optics Letters 2013年第1期11卷 25-30页

作者： Tie-Jun Wang Shuai Yuan Yanping Chen See Leang Chin Centre d'Optique Photonique et Laser (COPL) and Département de Physique de Génie Physique et D'Optique Université Laval Québec

Broadband and energetic terahertz （thz） pulses can be remotely generated in air through filamentation. We review such thz generation and detection in femtosecond Ti-sapphire laser induced remote filaments. New results are presented on the direct relationship between thz generation in a two color filament and induced N2 fluorescence through population trapping during molecular alignment and revival in air. This further supports the new technique of remote thz detection in air through the sensitive measurement of N2 fluorescence.

关键词： thz Intense broadband thz generation from femtosecond laser filamentation

thz generation from water wedge excited by dual-color pulse

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Chinese Optics Letters 2020年第7期18卷 107-110页

作者：李敏李振宇南君义夏宇贺明洋王锋卢文晖袁帅曾和平 Shanghai Key Laboratory of Modern Optical System Engineering Research Center of Optical Instrument and SystemMinistry of EducationSchool of Optical-Electrical and Computer EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China

Terahertz(thz) waves could be generated through exciting a gravity-guided, free-flowing water wedge by a dual-color pulse. It is not required to rotate the optimal angle considering the water film as an ionization *** is demonstrated to be more effective to generate stronger thz radiation when the ionization position is on the front surface of the air water interface of the water wedge by moving its position. The effect of pulse energy on thz generation is also investigated, and it is observed that with the increase of pulse energy the thz electric field shows a quadratic rising trend. These observations are consistent with air plasma induced thz emission.

关键词： water wedge thz plasma

Revealing the underlying mechanisms behind TE extraordinary thz transmission

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Photonics Research 2020年第4期8卷 430-439页

作者： SUZANNA FREER MIGUEL CAMACHO SERGEI A.KUZNETSOV RAFAEL R.BOIX MIGUEL BERUETE MIGUEL NAVARRO-CíA School of Physics and Astronomy University of BirminghamBirmingham B152TTUK Department of Physics and Astronomy University of ExeterExeter EX44QDUK Rzhanov Institute of Semiconductor Physics SB RAS Novosibirsk Branch TDIAM Novosibirsk 630090Russia Physics Department Novosibirsk State UniversityNovosibirsk 630090Russia Department of Electronics and Electromagnetism Faculty of PhysicsUniversity of Seville41012 SevilleSpain Antennas Group-TERALAB Universidad Pública de Navarra31006 PamplonaSpain Institute of Smart Cities Universidad Pública de Navarra31006 PamplonaSpain

Transmission through seemingly opaque surfaces,so-called extraordinary transmission,provides an exciting platform for strong light–matter interaction,spectroscopy,optical trapping,and color *** of the effort has been devoted to understanding and exploiting TM extraordinary transmission,while TE anomalous extraordinary transmission has been largely omitted in the *** is regrettable from a practical point of view since the stronger dependence of the TE anomalous extraordinary transmission on the array’s substrate provides additional design parameters for *** provide high-performance and cost-effective applications based on TE anomalous extraordinary transmission,a complete physical insight about the underlying mechanisms of the phenomenon must be first laid *** this end,resorting to a combined methodology including quasi-optical terahertz(thz)time-domain measurements,full-wave simulations,and method of moments analysis,subwavelength slit arrays under s-polarized illumination are studied here,filling the void in the current *** believe this work unequivocally reveals the leaky-wave role of the grounded-dielectric slab mode mediating in TE anomalous extraordinary transmission and provides the necessary framework to design practical high-performance thz components and systems.

关键词： Revealing the underlying mechanisms TE extraordinary transmission thz

Study of broadband thz time-domain spectroscopy at different relative humidity levels

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Chinese Optics Letters 2012年第4期10卷 78-81页

作者：林家任何宜贞张希成 Center for Terahertz Research Rensselaer Polytechnic InstituteTroyNY 12180-3590USA

Two detection techniques of broadband terahertz（thz）time-domain spectroscopy-thz air-biased coherent detection（thz-ABCD;from 0.3 to 14 thz）and electro-optical（EO）detection（from 0.3 to 7 thz）-are both performed at several different relative humidity *** thz power exponentially decays with the increase in relative *** dynamic range of the main pulse in the time domain linearly decreases as the relative humidity increases from 0%to 40%,and linear fittings show that the slopes are-0.017 and-0.019 for thz-ABCD and EO detection,*** of the multiple reflections caused by the crystal in the common EO detection,thz-ABCD has better spectral resolution（17 GHz）than that of EO detection（170 GHz）.The spectrum of water vapor absorption measured by thz-ABCD is also compared with that measured by the Fourier transform infrared spectroscopy（FTIR）.

关键词： thz Study of broadband thz time-domain spectroscopy at different relative humidity levels time

thz spectrum of reduced glutathione

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Science China(Physics,Mechanics & Astronomy) 2005年第5期48卷 585-592页

作者： WANG Weining1, YAN Haitao1, YUE Weiwei1, ZHAO Guozhong1, ZHANG Cunlin1, LIU Haibo2 & ZHANG Xicheng2 1. Department of Physics, Capital Normal University, Beijing 100037, China 2. Center for Terahertz Research, Rensselaer Polytechnic Institute, Tory, NY, USA Department of Physics Capital Normal Univesity Beijing China Center for Terahertz Research Rensselaer Polytechnic Institute Tory USA

The optical characteristics of reduced glutathione molecules between 0.2 thz and 2.4 thz have been investigated by thz time-domain spectroscopy (thz-TDS). The absorption characteristics and optical parameters of the reduced glutathione purged with Nitrogen at room temperature were obtained experimentally. The measured results were fitted well with the theoretical results computed by using Density Functional Theory (DFT) in far-infrared range. Also the conformation of the reduced glutathione molecule was simulated by Gaussian 03. This work has demonstrated significantly that thz-TDS spectroscopy can further be used to study other biological molecules in biological and biomedical engineering.

关键词： thz time domain spectroscopy, reduced glutathione, absorption spectrum, biological engineering.

Quasi-TEM mode propagation in twin-wire thz waveguides

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Chinese Optics Letters 2011年第11期9卷 63-66页

作者： P.Tannouri M.Peccianti P.L.Lavertu F.Vida R.Morandotti INRS-EMT 1650 Boulevard Lionel-BouletVarennesJ3X 1S2 Canada IPCF-CNR UOS RomaSapienza UniversityP.A.Moro 200185 RomeItaly

We numerically investigate the trade-offs between the dispersion properties,coupling efficiency,and geometrical constraints in dual-wire （twin-lead） terahertz （thz） *** particular,we show that their inherent linearly polarized quasi-transverse electromagnetic （TEM） modes exist for waveguide transverse dimensions comparable with the wavelength,enabling significant end-fire coupling （10%） for numericalaperture limited Gaussian beams while supporting a relatively low-dispersion propagation of below 0.5 ps 2 /m,as desired for short-pulse time-domain spectroscopy *** from the dual-wire structure,we also demonstrate that low-dispersion tapers can be designed to improve coupling efficiency.

关键词： thz mode Quasi-TEM mode propagation in twin-wire thz waveguides TEM

Detection and upconversion of three-dimensional MMW/thz images to the visible

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Photonics Research 2016年第6期4卷 306-312页

作者： Avihai Aharon(Akram) Daniel Rozban Avi Klein Amir Abramovich Yitzhak Yitzhaky Natan S.Kopeika Department of Electrical and Electronic Engineering Ariel University Department of Electrical and Computer Engineering Ben-Gurion University of the Negev Department of Electro-Optical Engineering Ben-Gurion University of the Negev

We present an inexpensive technique to obtain a three-dimensional(3D) millimeter wave(MMW) and terahertz(thz) image using upconversion. In this work we describe and demonstrate a method for upconversion of MMW/thz radiation to the visual band using a very inexpensive miniature glow discharge detector(GDD) and a silicon photodetector. We present MMW/thz upconversion images based on measuring the visual light emitting from the GDD rather than its electrical current. The results show better response time and better sensitivity compared to the electronic detection performed previously. Furthermore, in this work we perform frequency modulation continuous wave(FMCW) radar detection based on this method using a GDD lamp, with a photodetector to measure GDD light emission. By using FMCW detection, the range in addition to the intensity at each pixel can be obtained,thus yielding the 3D image. The GDD acts as a heterodyne mixer not only electronically but also optically. The suggested 3D upconversion technique using the GDD is simple and inexpensive and has better performance compared to other MMW/thz imaging systems suggested in the literature. This method provides minimum detectable signal power that is about 6 orders of magnitude better than similar plasma systems due to the very large internal signal gain deriving from the much smaller electrode separation and resulting in much higher plasma electric field.

关键词： thz Detection and upconversion of three-dimensional MMW/thz images to the visible FMCW