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2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)最新文献

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Terahertz-driven acceleration of a relativistic 35 MeV electron beam 太赫兹驱动的相对论性35mev电子束加速
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8873990
M. Hibberd, A. Healy, D. Lake, V. Georgiadis, E. J. H. Smith, O. Finlay, T. Pacey, J. Jones, Y. Saveliev, D. Walsh, E. Snedden, R. Appleby, G. Burt, D. Graham, S. Jamison
{"title":"Terahertz-driven acceleration of a relativistic 35 MeV electron beam","authors":"M. Hibberd, A. Healy, D. Lake, V. Georgiadis, E. J. H. Smith, O. Finlay, T. Pacey, J. Jones, Y. Saveliev, D. Walsh, E. Snedden, R. Appleby, G. Burt, D. Graham, S. Jamison","doi":"10.1109/IRMMW-THz.2019.8873990","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873990","url":null,"abstract":"We will present the first results from the CLARA research facility at Daresbury Laboratory demonstrating terahertz-driven acceleration of a relativistic 35 MeV electron beam. A polarization-tailored, frequency-tunable, narrowband terahertz source was used to directly excite the longitudinal accelerating mode of a dielectric-lined waveguide structure for collinear phase-velocity-matched THz-electron interaction.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"44 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74117728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative video-rate hydration imaging of Nafion® proton exchange membranes with THz radiation 太赫兹辐射下Nafion®质子交换膜的定量视频速率水化成像
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874199
Décio F. Alves de Lima, R. Letizia, Richard Dawson, Hungyen Lin
{"title":"Quantitative video-rate hydration imaging of Nafion® proton exchange membranes with THz radiation","authors":"Décio F. Alves de Lima, R. Letizia, Richard Dawson, Hungyen Lin","doi":"10.1109/IRMMW-THz.2019.8874199","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874199","url":null,"abstract":"Nafion® polymeric membranes are the prime electrolyte material for proton exchange membrane fuel cells (PEMFC), requiring adequate hydration in order to reach high proton conductivity. The relatively high attenuation of terahertz (THz) radiation of liquid water compared to the surrounding polymer assembly enables a contrast to be observed for inspecting water build-up in Nafion® membranes. This paper investigates the feasibility of a compact THz camera for liquid water mapping and quantification in Nafion® polymeric membrane.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"71 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86274459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Quality n-Type Ge/SiGe Multilayers for THz Quantum Cascade Lasers 用于太赫兹量子级联激光器的高质量n型Ge/SiGe多层材料
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874294
M. Montanari, C. Ciano, L. Persichetti, L. Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. Paul, T. Grange, S. Birner, M. Scuderi, G. Nicotra, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, M. Seta
{"title":"High-Quality n-Type Ge/SiGe Multilayers for THz Quantum Cascade Lasers","authors":"M. Montanari, C. Ciano, L. Persichetti, L. Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D. Paul, T. Grange, S. Birner, M. Scuderi, G. Nicotra, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani, M. Seta","doi":"10.1109/IRMMW-THz.2019.8874294","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874294","url":null,"abstract":"The exploitation of intersubband transitions in Ge/SiGe quantum cascade devices could pave the way towards the integration of THz light emitters into the silicon-based technology. Aiming at the realization of a Ge/SiGe Quantum Cascade Laser (QCL), we investigate optical and structural properties of n-type Ge/SiGe coupled quantum well systems. The samples have been investigated by means of X-ray diffraction, scanning transmission electron microscopy, atom probe tomography and Fourier Transform Infrared absorption spectroscopy to assess the growth capability with respect to QCL design requirements, carefully identified by means of modelling based on the non-equilibrium Green function formalism.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"26 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75610535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Control of Terahertz Nonlinearity in Graphene by Gating 石墨烯中太赫兹非线性的门控控制
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874288
H. Hafez, Klaas-Jan Tielrooij, M. Bonn, D. Turchinovich
{"title":"Control of Terahertz Nonlinearity in Graphene by Gating","authors":"H. Hafez, Klaas-Jan Tielrooij, M. Bonn, D. Turchinovich","doi":"10.1109/IRMMW-THz.2019.8874288","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874288","url":null,"abstract":"We study the dependence of the terahertz (THz) nonlinearity of graphene and its temporal dynamics on the free carrier concentration by THz-pump/THz-probe spectroscopy of a gated graphene at room temperature. The strong THz nonlinearity is attributed to electron heating by the driving THz field and shows a drastic dependence on the background electron concentration, demonstrating a wide-range tunability of the THz nonlinearity of graphene.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"53 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90553364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating liquid water distribution in Nafion polymer electrolyte membrane with terahertz imaging 用太赫兹成像技术研究Nafion聚合物电解质膜中液态水的分布
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8873813
D. F. A. D. Lima, R. Letizia, R. Degl’Innocenti, Richard Dawson, Hungyen Lin
{"title":"Investigating liquid water distribution in Nafion polymer electrolyte membrane with terahertz imaging","authors":"D. F. A. D. Lima, R. Letizia, R. Degl’Innocenti, Richard Dawson, Hungyen Lin","doi":"10.1109/IRMMW-THz.2019.8873813","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873813","url":null,"abstract":"Nafion polymeric membranes are the most common electrolyte material for proton exchange membrane fuel cells (PEMFC), requiring adequate hydration in order to reach high proton conductivity. The relatively high attenuation of terahertz (THz) radiation of liquid water enables a contrast to be observed for inspecting water build-up in Nafion membranes. This paper investigates the feasibility of a compact THz system using a THz camera for liquid water imaging and quantification in a Nafion polymeric membrane.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"70 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84101473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Photoconductive Arrays for High-Field Terahertz Generation 用于高场太赫兹产生的光导阵列
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874371
D. R. Bacon, M. Rosamond, T. Gill, A. Burnett, Lianhe H. Li, J. Cunningham, E. Linfield, A. Davies, P. Dean, J. Freeman
{"title":"Photoconductive Arrays for High-Field Terahertz Generation","authors":"D. R. Bacon, M. Rosamond, T. Gill, A. Burnett, Lianhe H. Li, J. Cunningham, E. Linfield, A. Davies, P. Dean, J. Freeman","doi":"10.1109/IRMMW-THz.2019.8874371","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874371","url":null,"abstract":"We report on the development of a large-area photoconductive THz array structure with an LT-GaAs active region fabricated on quartz substrates using a BCB bonding process. These are shown to generate high THz-fields greater than 100kV/cm, with a bandwidth greater than 6 THz.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"30 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80288649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Ionic permeability and interfacial doping of graphene on SiO2 measured with Terahertz photoconductivity measurements 用太赫兹光电导率测量方法测量了石墨烯在SiO2上的离子渗透率和界面掺杂
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874148
Xiaoyu Jia, Klaas-Jan Tielrooij, M. Bonn, Hai I. Wang
{"title":"Ionic permeability and interfacial doping of graphene on SiO2 measured with Terahertz photoconductivity measurements","authors":"Xiaoyu Jia, Klaas-Jan Tielrooij, M. Bonn, Hai I. Wang","doi":"10.1109/IRMMW-THz.2019.8874148","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874148","url":null,"abstract":"Graphene has been widely used in various electrochemical applications owing to its outstanding electrical and chemical properties. The presence of electrolyte at the graphene surfaces affects graphene’s electronic properties, especially its electrical conductivity. The precise mechanism underlying the graphene-electrolyte interaction has remained elusive, despite the importance of graphene for electrochemical applications. Here, we employ optical-pump THz-probe spectroscopy as a contact-free and all-optical means to investigate the impact of cations on graphene conductivity in the electrolyte. We reveal ionic permeability though graphene, resulting in an interfacial doping effect in SiO2-supported graphene.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"94 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74371434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First light results from a novel cryogenic Fabry-Pérot interferometer 一种新型低温法布里-帕姆罗干涉仪首次发光
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874094
D. Naylor, I. Veenendaal, T. Fulton, B. Gom, Adam J. Christiansen, W. Jellema, C. Feenstra, M. Eggens, P. Ade
{"title":"First light results from a novel cryogenic Fabry-Pérot interferometer","authors":"D. Naylor, I. Veenendaal, T. Fulton, B. Gom, Adam J. Christiansen, W. Jellema, C. Feenstra, M. Eggens, P. Ade","doi":"10.1109/IRMMW-THz.2019.8874094","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874094","url":null,"abstract":"The sensitivity of state-of-the-art superconducting far-infrared detectors is such that astronomical observations at these wavelengths are limited by photon noise from the astronomical source unless a method of restricting the spectral bandpass is employed. One such method is to use a high resolution Fabry-Perot interferometer (FPI) in conjunction with a lower resolution, post-dispersing system, such as a grating spectrometer. The resonant wavelength of an FPI is typically tuned by changing the spacing or medium between the parallel reflecting plates of the etalon. We previously reported on a novel design in which the wavelength is tuned by scanning the angle of incidence, which simplifies the cryo-mechanical design, actuation and metrology. Here we present first light results from the realized instrument.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"50 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90225835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurements of effective porosity of pharmaceutical tablets using THz TDS 太赫兹TDS法测定片剂有效孔隙率
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874023
Iliya Tikhomirov, D. Markl, M. Naftaly
{"title":"Measurements of effective porosity of pharmaceutical tablets using THz TDS","authors":"Iliya Tikhomirov, D. Markl, M. Naftaly","doi":"10.1109/IRMMW-THz.2019.8874023","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874023","url":null,"abstract":"The pharmaceutical industry requires a rapid nondestructive technique for monitoring porosity of tablets. Here effective porosity of compressed lactose pellets was investigated using THz time-domain spectroscopy (THz TDS).","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"164 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73941768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
THz links using tube amplifiers and steerable beams for indoor applications 太赫兹链路使用管放大器和可操纵光束用于室内应用
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-10-21 DOI: 10.1109/IRMMW-THz.2019.8874114
C. Belem-Goncalves, Andre Sarker, H. Giddens, C. Biurrun, C. D. Boccio, C. Luxey, Y. Hao, Rupa Basu, C. Paoloni, G. Ducournau
{"title":"THz links using tube amplifiers and steerable beams for indoor applications","authors":"C. Belem-Goncalves, Andre Sarker, H. Giddens, C. Biurrun, C. D. Boccio, C. Luxey, Y. Hao, Rupa Basu, C. Paoloni, G. Ducournau","doi":"10.1109/IRMMW-THz.2019.8874114","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874114","url":null,"abstract":"We present in this paper an ongoing project will is targeting the combination of several technologies to achieve high-data-rate and long-range links using a mW level source with fast modulation, waveguide coupled to drive a traveling-wave tube amplifier towards a modulated in the 210-250 GHz range. In this project we are also investigating antennas structures, high-gain for outdoor links and using lens or cassegrain design or lower gain systems with steerable capability for indoor links.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86441815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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