Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370689
M. A. Campo, K. Holc, A. Leuther, R. Weber, S. Bruni, N. Llombart
Many applications, such as high-resolution radar or high-speed wireless communications, will profit from the development of low-cost solutions for mm- and sub-mm wave antennas and front-ends. In this work, a wideband integrated silicon lens antenna fed by a quartz leaky-wave cavity is presented, covering the full H-band (220-320GHz). Thanks to a low-loss novel chip interconnect, based on spray coating of low dielectric permittivity materials, the use of waveguide split-blocks is avoided, reaching a wideband, low-loss and cost-effective solution.
{"title":"H-band Silicon Lens Antenna with Quartz Leaky-Wave Feeder and Novel Chip Interconnect","authors":"M. A. Campo, K. Holc, A. Leuther, R. Weber, S. Bruni, N. Llombart","doi":"10.1109/IRMMW-THz46771.2020.9370689","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370689","url":null,"abstract":"Many applications, such as high-resolution radar or high-speed wireless communications, will profit from the development of low-cost solutions for mm- and sub-mm wave antennas and front-ends. In this work, a wideband integrated silicon lens antenna fed by a quartz leaky-wave cavity is presented, covering the full H-band (220-320GHz). Thanks to a low-loss novel chip interconnect, based on spray coating of low dielectric permittivity materials, the use of waveguide split-blocks is avoided, reaching a wideband, low-loss and cost-effective solution.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"67 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91116675","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370500
Hyo-Jin Lee, Jong‐Ryul Yang
A CMOS plasmon detector is proposed to improve dynamic range and sensitivity using different body-biased transistors. Three detectors biased at different body voltages are connected in parallel to the antenna, based on that the transistor has the highest voltage responsivity at the subthreshold region. The outputs are current-combined at the transconductance stage of the preamplifier for canceling the leakage signals. The complete detector IC consists of a detector core, a preamplifier, a main amplifier with a folded cascade structure, a biasing circuit and a differential integrated patch antenna. The proposed structure was fabricated with an area of 2.05 mm2using TSMC 0.25-μm CMOS technology. Post-simulation and measurement results show a wide dynamic range and high sensitivity compared to the detector using three equivalently biased transistors.
{"title":"A CMOS Plasmon Detector with Different Body-Bias Voltages","authors":"Hyo-Jin Lee, Jong‐Ryul Yang","doi":"10.1109/IRMMW-THz46771.2020.9370500","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370500","url":null,"abstract":"A CMOS plasmon detector is proposed to improve dynamic range and sensitivity using different body-biased transistors. Three detectors biased at different body voltages are connected in parallel to the antenna, based on that the transistor has the highest voltage responsivity at the subthreshold region. The outputs are current-combined at the transconductance stage of the preamplifier for canceling the leakage signals. The complete detector IC consists of a detector core, a preamplifier, a main amplifier with a folded cascade structure, a biasing circuit and a differential integrated patch antenna. The proposed structure was fabricated with an area of 2.05 mm2using TSMC 0.25-μm CMOS technology. Post-simulation and measurement results show a wide dynamic range and high sensitivity compared to the detector using three equivalently biased transistors.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"32 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91229246","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370875
A. Kvitsinskiy, P. Demchenko, M. Novoselov, I. Anoshkin, K. Bogdanov, A. Baranov, M. Khodzitsky
Magneto-optic Faraday effect in unaligned single-wall carbon nanotube thin films with different geometric parameters was experimental studied in a frequency range 0.2–0.8 THz at a controlled room temperature of 291–293 K, and a relative humidity of 40–45%. A change of 15° in an azimuth angle, and of 10° in an ellipticity angle was achieved.
{"title":"Optically Driven Terahertz Wave Polarization Control by Single-Wall Carbon Nanotube Thin Film","authors":"A. Kvitsinskiy, P. Demchenko, M. Novoselov, I. Anoshkin, K. Bogdanov, A. Baranov, M. Khodzitsky","doi":"10.1109/IRMMW-THz46771.2020.9370875","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370875","url":null,"abstract":"Magneto-optic Faraday effect in unaligned single-wall carbon nanotube thin films with different geometric parameters was experimental studied in a frequency range 0.2–0.8 THz at a controlled room temperature of 291–293 K, and a relative humidity of 40–45%. A change of 15° in an azimuth angle, and of 10° in an ellipticity angle was achieved.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"51 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91239957","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370475
Á. J. Pascual, T. Batte, O. de Sagazan, G. Carpintero, R. Sauleau, D. González-Ovejero
This abstract describes the first design and assembly of a photonically-excited antenna at E-band for beam switching in millimeter-wave wireless links. The designed antenna consists of two arrays of stacked patches, with one photodiode feeding each array. The stacked patch provides an impedance bandwidth larger than 23 % and a stable radiation pattern over the E-band. The array is combined with a lens to increase the overall gain. Excitation of either patch array allows beam steering between ±2.7° for accurate beam alignment.
{"title":"A Photonic Transmitter for Beam Switching in mm-wave Wireless Links","authors":"Á. J. Pascual, T. Batte, O. de Sagazan, G. Carpintero, R. Sauleau, D. González-Ovejero","doi":"10.1109/IRMMW-THz46771.2020.9370475","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370475","url":null,"abstract":"This abstract describes the first design and assembly of a photonically-excited antenna at E-band for beam switching in millimeter-wave wireless links. The designed antenna consists of two arrays of stacked patches, with one photodiode feeding each array. The stacked patch provides an impedance bandwidth larger than 23 % and a stable radiation pattern over the E-band. The array is combined with a lens to increase the overall gain. Excitation of either patch array allows beam steering between ±2.7° for accurate beam alignment.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"78 1","pages":"01-01"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90799136","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370972
J. Webber, Yuichiro Yamagami, G. Ducournau, P. Szriftgiser, M. Fujita, T. Nagatsuma, Ranjan Singh
High speed inter-chip communications are required to operate despite multiple waveguide bends. Valley photonic crystal waveguides have a great potential in this area as bends can be implemented with near-zero losses. Here we demonstrate a 50 Gbit/s terahertz communication using QAM-16 modulation in the 300 GHz band. The experiment employed a uni-traveling-carrier photo-diode transmitter, 10-bend VPC waveguide and sub-harmonic mixer receiver and performance results show a bit error rate of $2times 10^{-7}$ was achieved.
{"title":"50-Gbit/s Terahertz Communication using a Valley Photonic Crystal Waveguide","authors":"J. Webber, Yuichiro Yamagami, G. Ducournau, P. Szriftgiser, M. Fujita, T. Nagatsuma, Ranjan Singh","doi":"10.1109/IRMMW-THz46771.2020.9370972","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370972","url":null,"abstract":"High speed inter-chip communications are required to operate despite multiple waveguide bends. Valley photonic crystal waveguides have a great potential in this area as bends can be implemented with near-zero losses. Here we demonstrate a 50 Gbit/s terahertz communication using QAM-16 modulation in the 300 GHz band. The experiment employed a uni-traveling-carrier photo-diode transmitter, 10-bend VPC waveguide and sub-harmonic mixer receiver and performance results show a bit error rate of $2times 10^{-7}$ was achieved.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"24 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89554435","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370870
T. Kroh, T. Rohwer, H. Dinter, M. Kellermeier, M. Fakhari, U. Demırbas, H. Cankaya, M. Pergament, M. Hemmer, R. Assmann, F. Kärtner, N. H. Matlis
Development of THz-powered photoguns promises to bring benefits to many applications by scaling down the size and cost of these devices as well as creating new capabilities. In particular, THz photoguns producing MeV beams are desired as the front end for THz-powered LINACs. Generating sufficient THz energy, however, is challenging, as is transporting and coupling the THz into the gun. We present initial results on development of the THz source and transport for an MeV gun.
{"title":"Powering a Photogun using Single-Cycle Terahertz","authors":"T. Kroh, T. Rohwer, H. Dinter, M. Kellermeier, M. Fakhari, U. Demırbas, H. Cankaya, M. Pergament, M. Hemmer, R. Assmann, F. Kärtner, N. H. Matlis","doi":"10.1109/IRMMW-THz46771.2020.9370870","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370870","url":null,"abstract":"Development of THz-powered photoguns promises to bring benefits to many applications by scaling down the size and cost of these devices as well as creating new capabilities. In particular, THz photoguns producing MeV beams are desired as the front end for THz-powered LINACs. Generating sufficient THz energy, however, is challenging, as is transporting and coupling the THz into the gun. We present initial results on development of the THz source and transport for an MeV gun.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"15 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78259215","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370638
A. Pizzuto, Wonsik Choi, Xiuling Li, W. Wilson, D. Mittleman
We demonstrate the first “nonlocal” nanoscale NIR-pump THz-probe measurements of semi-insulating GaAs using a scattering-type scanning near-field microscopy technique. We observe temporal shifts in the photoexcitation response which correspond to lateral offsets in the pump spot.
{"title":"Nonlocal Optical Pump-THz Probe in the Near Field","authors":"A. Pizzuto, Wonsik Choi, Xiuling Li, W. Wilson, D. Mittleman","doi":"10.1109/IRMMW-THz46771.2020.9370638","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370638","url":null,"abstract":"We demonstrate the first “nonlocal” nanoscale NIR-pump THz-probe measurements of semi-insulating GaAs using a scattering-type scanning near-field microscopy technique. We observe temporal shifts in the photoexcitation response which correspond to lateral offsets in the pump spot.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"68 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75045172","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370604
Stephanie O. Adeyemo, Srabani Kar, S. Silva, I. Jayawardena, Ravi Silva, H. Joyce
Tin (Sn)-based perovskites are promising for lower band gap and tandem solar cells due to their red-shifted band gap towards the infrared region. However, Sn based hybrid metal halide perovskite is well known to suffer rapid photoconductivity decay due to the oxidation of Sn2+ to Sn4+ under atmospheric oxygen. Here, the charge carrier dynamics of tin based metal halide perovskite is investigated using optical pump-terahertz probe (OPTP) spectroscopy. Also, the performance of the perovskite films at different annealing temperatures is compared and the best performing temperature is identified. The Sn based perovskite films exhibited a remarkable charge carrier mobility and diffusion length.
{"title":"High Charge Carrier Mobilities and Long Diffusion Lengths in Tin Based Metal Halide Perovskite","authors":"Stephanie O. Adeyemo, Srabani Kar, S. Silva, I. Jayawardena, Ravi Silva, H. Joyce","doi":"10.1109/IRMMW-THz46771.2020.9370604","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370604","url":null,"abstract":"Tin (Sn)-based perovskites are promising for lower band gap and tandem solar cells due to their red-shifted band gap towards the infrared region. However, Sn based hybrid metal halide perovskite is well known to suffer rapid photoconductivity decay due to the oxidation of Sn2+ to Sn4+ under atmospheric oxygen. Here, the charge carrier dynamics of tin based metal halide perovskite is investigated using optical pump-terahertz probe (OPTP) spectroscopy. Also, the performance of the perovskite films at different annealing temperatures is compared and the best performing temperature is identified. The Sn based perovskite films exhibited a remarkable charge carrier mobility and diffusion length.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"47 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78497629","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370592
A. Moutaouakil, H. Fukidome, T. Otsuji
Since the emergence of Graphene as a new 2D material with interesting optical, electrical and mechanical properties, several theoretical and experimental researches have proved the ability of this material to fulfill the requirements of many industries. One of these promising fields is the Terahertz emission and detection technology. In this work, we report on the theoretical modeling of plasmon dispersion and decay phenomena in ungated Graphene ribbons, as well as the experimental investigation of these plasmons in the Terahertz range using the Attenuated Total Reflection measurement setup.
{"title":"Investigation of Terahertz properties in Graphene ribbons","authors":"A. Moutaouakil, H. Fukidome, T. Otsuji","doi":"10.1109/IRMMW-THz46771.2020.9370592","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370592","url":null,"abstract":"Since the emergence of Graphene as a new 2D material with interesting optical, electrical and mechanical properties, several theoretical and experimental researches have proved the ability of this material to fulfill the requirements of many industries. One of these promising fields is the Terahertz emission and detection technology. In this work, we report on the theoretical modeling of plasmon dispersion and decay phenomena in ungated Graphene ribbons, as well as the experimental investigation of these plasmons in the Terahertz range using the Attenuated Total Reflection measurement setup.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"173 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74974536","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}
Pub Date : 2020-11-08DOI: 10.1109/IRMMW-THz46771.2020.9370521
Yanhua Bo, Ziming Zhang, Jiyuan Fang, Yong Du, Zhi Hong
The cocrystal of isoniazid and protocatechuic acid under slow solvent evaporation condition has been characterized by terahertz spectroscopic technique. We used DFT to calculate the THz absorption spectrum of the cocrystal, which is consistent with the experimental results. And vibrational modes of the cocrystal between isoniazid and protocatechuic acid were assigned.
{"title":"Cocrystal Formation between Isoniazid and Protocatechuic Acid Based on Terahertz Spectroscopy and DFT Simulation","authors":"Yanhua Bo, Ziming Zhang, Jiyuan Fang, Yong Du, Zhi Hong","doi":"10.1109/IRMMW-THz46771.2020.9370521","DOIUrl":"https://doi.org/10.1109/IRMMW-THz46771.2020.9370521","url":null,"abstract":"The cocrystal of isoniazid and protocatechuic acid under slow solvent evaporation condition has been characterized by terahertz spectroscopic technique. We used DFT to calculate the THz absorption spectrum of the cocrystal, which is consistent with the experimental results. And vibrational modes of the cocrystal between isoniazid and protocatechuic acid were assigned.","PeriodicalId":6746,"journal":{"name":"2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"57 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76287358","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}
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