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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)最新文献

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Polar soft mode in titanium-doped single crystalline BaFe12-xTix019 M-type hexaferrite 掺钛单晶BaFe12-xTix019 m型六铁体的极性软模式
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8509995
L. Alyabyeva, S. Yegiyan, V. Torgashev, E. Zhukova, D. Vinnik, A. Prokhorov, S. Gudkova, B. Gorshunov
{"title":"Polar soft mode in titanium-doped single crystalline BaFe12-xTix019 M-type hexaferrite","authors":"L. Alyabyeva, S. Yegiyan, V. Torgashev, E. Zhukova, D. Vinnik, A. Prokhorov, S. Gudkova, B. Gorshunov","doi":"10.1109/IRMMW-THZ.2018.8509995","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8509995","url":null,"abstract":"Electrodynamic response of single-crystalline M-type barium hexaferrite doped with $mathbf{Ti}^{4+}$ is studied for two principal polarizations in the temperature range 10–300 K by means of terahertz-infrared spectroscopy. The dynamics of polar phonons is investigated along with low-energy absorption mechanisms connected with relaxation process in polar domain walls and with anharmonic contributions of multiple phonons interaction.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"12 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74518127","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
The 1200GHz Receiver Frontend of the Submillimetre Wave Instrument of ESA JUpiter ICy moons Explorer 欧空局木星冰卫星探测器亚毫米波仪的1200GHz接收机前端
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8509935
A. Maestrini, L. Gatilova, J. Treuttel, Y. Jin, A. Cavanna, D. Melgar, T. Vacelet, A. Feret, S. Caroopen, G. Gay, F. Dauplay, J. Krieg, B. Thomas, P. D. de Maagt, C. Goldstein
{"title":"The 1200GHz Receiver Frontend of the Submillimetre Wave Instrument of ESA JUpiter ICy moons Explorer","authors":"A. Maestrini, L. Gatilova, J. Treuttel, Y. Jin, A. Cavanna, D. Melgar, T. Vacelet, A. Feret, S. Caroopen, G. Gay, F. Dauplay, J. Krieg, B. Thomas, P. D. de Maagt, C. Goldstein","doi":"10.1109/IRMMW-THZ.2018.8509935","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8509935","url":null,"abstract":"A 1080-127SGHz prototype receiver for the Submillimeter Wave Instrument of JUICE with state-of-the-art performance is presented. The receiver is based on European Schottky diode technologies.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"181 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74382289","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: 11
THz Transient Photoconductivity with Near-Field Detection 太赫兹瞬态光电导率与近场探测
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510369
N. V. van Hoof, Stan E. T. ter Huurne, J. Rivas, A. Halpin
{"title":"THz Transient Photoconductivity with Near-Field Detection","authors":"N. V. van Hoof, Stan E. T. ter Huurne, J. Rivas, A. Halpin","doi":"10.1109/IRMMW-THZ.2018.8510369","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510369","url":null,"abstract":"We demonstrate a novel technique that enables the sub-diffraction near-field study of photo-excited structures probed with broadband THz radiation. As a proof-of-concept this system measures sub-ps temporal dynamics of photoexcited carriers in a thin film of GaAs with a spatial resolution of 60 μm (λ/10 at 0.5 THz peak intensity).","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"20 3","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72590792","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
Bi-layer Metamaterial based Broadband Linear Polarization Converter under Two Coherent Beam Illumination 双相干光束照明下基于双层超材料的宽带线性偏振变换器
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510269
W. Tan, Caihong Zhang, Hua Li, Dacheng Wang, Zheng Feng, B. Jin
{"title":"Bi-layer Metamaterial based Broadband Linear Polarization Converter under Two Coherent Beam Illumination","authors":"W. Tan, Caihong Zhang, Hua Li, Dacheng Wang, Zheng Feng, B. Jin","doi":"10.1109/IRMMW-THZ.2018.8510269","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510269","url":null,"abstract":"We demonstrate a bi-layer metamaterial structure with mirror symmetry that acts as a linear polarization converter under two-antisymmetric-beam illumination. Its high performance, including broad bandwidth, high transmittance and high efficiency, originates from the combination of two interference processes: the Fabry-Pérot-like cavity effect between two metallic patterned layers and coherent excitations of spatially separated subwavelength resonators. Terahertz (THz) experiments show good agreement with numerical simulations.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"46 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73814953","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
Powerful two-stage THz-range FEL based on intense parallel sheet beams: Design, simulations and recent results 基于强平行板束的强大两级太赫兹范围自由电子激光器:设计、模拟和最新结果
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510144
A. Arzhannikov, N. Ginzburg, P. V. Kalinin, S. Kuznetsov, N. Peskov, A. Sergeev, S. Sinitsky, Vasiliy D. Stenanov, V. Y. Zaslavskv
{"title":"Powerful two-stage THz-range FEL based on intense parallel sheet beams: Design, simulations and recent results","authors":"A. Arzhannikov, N. Ginzburg, P. V. Kalinin, S. Kuznetsov, N. Peskov, A. Sergeev, S. Sinitsky, Vasiliy D. Stenanov, V. Y. Zaslavskv","doi":"10.1109/IRMMW-THZ.2018.8510144","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510144","url":null,"abstract":"Project of a two-stage cascade THz FEL driven by intense parallel sheet beams is under development at the ELMI accelerator. For powering this two-channel scheme, planar 75 GHz FEM-oscillator with 2D distributed feedback, which was successfully realized in previous experiments, is planned to be used. Pumping wave generated in this first section is transported by the coupling waveguides to the second channel and scattered into the THz radiation at the second parallel electron beam. Results of theoretical analysis, computer simulations and recent experimental studies of this FEL scheme are presented.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"9 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73930206","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
Thickness Measurements with Multistatic Sparse Arrays 基于多静态稀疏阵列的厚度测量
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510431
A. Keil, N. Schreiner, F. Friederich
{"title":"Thickness Measurements with Multistatic Sparse Arrays","authors":"A. Keil, N. Schreiner, F. Friederich","doi":"10.1109/IRMMW-THZ.2018.8510431","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510431","url":null,"abstract":"Thickness measurements using terahertz waves have received great attention in the area of industrial nondestructive testing. Currently these technologies are limited to individual thickness measurements using scanning probes. Within this contribution we demonstrate that a state of the art terahertz imaging system based on a multistatic sparse array can be used to acquire real-time data und to establish thicknesses of bulk materials on an industrial scale. We are discussing extensions how to go below the inherent resolution determined by the bandwidth of the signal.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"37 1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74098259","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
Development and Modeling of Folded-Waveguide Slow-Wave Structures for Millimeter-Band Traveling-Wave Tubes 毫米波管折叠波导慢波结构的研制与建模
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510165
Artem G. Terentvuk, A. Rozhnev, N. M. Rvskin, A. Starodubov, V. Galushka, A. Pavlov
{"title":"Development and Modeling of Folded-Waveguide Slow-Wave Structures for Millimeter-Band Traveling-Wave Tubes","authors":"Artem G. Terentvuk, A. Rozhnev, N. M. Rvskin, A. Starodubov, V. Galushka, A. Pavlov","doi":"10.1109/IRMMW-THZ.2018.8510165","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510165","url":null,"abstract":"Folded waveguide (FW) is a promising type of slow-wave structure (SWS) for millimeter-wave traveling-wave tubes. Results of development of several millimeter-band FW SWSs are presented. SWS circuits at Q- and V -band are fabricated by CNC-machining. Cold electromagnetic parameters of the SWS characteristics are simulated and reasonable agreement with the results of measurements is observed. Small-signal and large-signal gain is calculated.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"11 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79289836","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: 3
Enhancement of Electric Field in E-plane Sectoral Horn Antennas Reconsidered by Plasmonic Theory 用等离子体理论重新考虑e面扇形喇叭天线的电场增强
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510283
K. Kurihara, K. Kusama, F. Kuwashima, O. Morikawa, K. Yamamoto, H. Kitahara, M. Tani
{"title":"Enhancement of Electric Field in E-plane Sectoral Horn Antennas Reconsidered by Plasmonic Theory","authors":"K. Kurihara, K. Kusama, F. Kuwashima, O. Morikawa, K. Yamamoto, H. Kitahara, M. Tani","doi":"10.1109/IRMMW-THZ.2018.8510283","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510283","url":null,"abstract":"Plasmonic theory is applied to the E-plane sectoral horn antennas discussed in microwave technology where metals is treated as perfect conductors approximately. The theory enables us to reconsider the sectoral horn antennas with a finite metallic permittivity for more realistic estimation of an enhancement factor of electric field that enters at the mouth of the sectoral horn antennas through the throat to the parallel- plate waveguide as a limit case of the rectangular waveguide.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"67 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85328983","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
All-Electronic High-Resolution Terahertz Thickness Measurements 全电子高分辨率太赫兹厚度测量
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510060
N. Schreiner, W. Sauer-Greff, R. Urbansky, Fabian Friedcrich
{"title":"All-Electronic High-Resolution Terahertz Thickness Measurements","authors":"N. Schreiner, W. Sauer-Greff, R. Urbansky, Fabian Friedcrich","doi":"10.1109/IRMMW-THZ.2018.8510060","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510060","url":null,"abstract":"Broadband laser based terahertz systems become currently established for inline multilayer paint inspection in the automotive industry. This technology has also proven to be suitable for inspections of certain multilayer plastic structures with up to a few millimeters of thickness. We present a complementary technique for the measurement of dielectric multilayer structures with thicknesses of sub millimeter to several centimeters, using frequency-modulated continuous-wave electronic transceivers. In order to resolve layers below the inherent resolution limit by the modulation bandwidth, we take advantage of model-based signal processing techniques.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"56 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85394317","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: 3
Considerations on Local Oscillator Isolation in a Terahertz Wireless Link Used for Future Communication Systems 用于未来通信系统的太赫兹无线链路中本振隔离的考虑
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510497
I. Dan, Christopher M. Grotsch, S. Shiba, I. Kallfass
{"title":"Considerations on Local Oscillator Isolation in a Terahertz Wireless Link Used for Future Communication Systems","authors":"I. Dan, Christopher M. Grotsch, S. Shiba, I. Kallfass","doi":"10.1109/IRMMW-THZ.2018.8510497","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510497","url":null,"abstract":"Monolithic integrated circuits operating in the low terahertz region, at frequencies beyond 275 GHz, have been successfully employed in communication systems, demonstrating that high data rates can be achieved. This paper analyzes and identifies one of the main factors that influence one important impairment of a 300 GHz wireless system: the isolation of the local oscillator. Improving this isolation will have a positive effect on the quality of the data transmissions, allowing better figures of merit, like error vector magnitude and bit error rates and higher order modulation formats, which will result in an even higher data rate.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"45 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79497166","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
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