Pub Date : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8873978
Y. Minami, B. Ofori-Okai, P. Sivarajah, I. Katayama, J. Takeda, K. Nelson, T. Suemoto
We demonstrate that intense terahertz (THz) electric-field transients can manipulate the motion of ions in an ionic conductor. The cations trapped in local potential minima are accelerated by single-cycle THz pulses leading to a macroscopic current flow.
{"title":"Ionic Current in Superionic Conductor Na+ Beta-Alumina Induced by Terahertz Electric Fields","authors":"Y. Minami, B. Ofori-Okai, P. Sivarajah, I. Katayama, J. Takeda, K. Nelson, T. Suemoto","doi":"10.1109/IRMMW-THz.2019.8873978","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873978","url":null,"abstract":"We demonstrate that intense terahertz (THz) electric-field transients can manipulate the motion of ions in an ionic conductor. The cations trapped in local potential minima are accelerated by single-cycle THz pulses leading to a macroscopic current flow.","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":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86298895","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8874183
S. V. Berkel, E. S. Malotaux, B. V. D. Bogert, M. Spirito, D. Cavallo, Andrea Neto, N. Llombart
A 12-pixel THz Focal Plane Array (FPA), integrated in Global Foundries 22nm CMOS technology, enabling high resolution passive THz imaging, is presented. The array efficiently couples blackbody radiation from 200 GHz to 600 GHz to Schottky Barrier Diodes (SBDs) in a differential topology. An antenna-detector co-design results in an average Noise Equivalent Power (NEP) of 0.9 pW/$sqrt{text{Hz}}$. An extremely small array periodicity is achieved by using two orthogonal polarizations. Such configuration enables passive imaging with a near-diffraction limited resolution while simultaneously maintaining a high optical efficiency of 42%. The array is currently in tape-out and measurements will be presented at the conference.
{"title":"High Resolution Passive THz Imaging Array With Polarization Reusage in 22nm CMOS","authors":"S. V. Berkel, E. S. Malotaux, B. V. D. Bogert, M. Spirito, D. Cavallo, Andrea Neto, N. Llombart","doi":"10.1109/IRMMW-THz.2019.8874183","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874183","url":null,"abstract":"A 12-pixel THz Focal Plane Array (FPA), integrated in Global Foundries 22nm CMOS technology, enabling high resolution passive THz imaging, is presented. The array efficiently couples blackbody radiation from 200 GHz to 600 GHz to Schottky Barrier Diodes (SBDs) in a differential topology. An antenna-detector co-design results in an average Noise Equivalent Power (NEP) of 0.9 pW/$sqrt{text{Hz}}$. An extremely small array periodicity is achieved by using two orthogonal polarizations. Such configuration enables passive imaging with a near-diffraction limited resolution while simultaneously maintaining a high optical efficiency of 42%. The array is currently in tape-out and measurements will be presented at the conference.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"54 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86079951","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8874332
C. Deimert, P. Goulain, J. Manceau, A. Bousseksou, R. Colombelli, Z. Wasilewski
We demonstrate room temperature intersubband transitions in the THz range using continuously-graded Alx Ga1-xAs parabolic quantum wells. Below 100K, the linewidth of the transition reaches a record-low value of 5.7% of the central frequency.
{"title":"Room temperature THz intersubband transitions in continuously-graded AlxGa1-xAs parabolic quantum wells","authors":"C. Deimert, P. Goulain, J. Manceau, A. Bousseksou, R. Colombelli, Z. Wasilewski","doi":"10.1109/IRMMW-THz.2019.8874332","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874332","url":null,"abstract":"We demonstrate room temperature intersubband transitions in the THz range using continuously-graded Alx Ga1-xAs parabolic quantum wells. Below 100K, the linewidth of the transition reaches a record-low value of 5.7% of the central frequency.","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":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83988695","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8873703
I. Jáuregui-López, P. Rodriguez-Ulibarri, A. Urrutia, S. Kuznetsov, M. Beruete
In this work, two labyrinth metasurfaces with inductive and capacitive behavior operating in the range of the Terahertz (THz) are presented. The high concentration of electric field in these structures led to excellent results for the use of the devices as thin-film sensors. Numerical and experimental studies have been carried out, with excellent sensitivity and Figure of Merit (FOM) results enhancing dramatically those found in the literature. Due to its great behavior, the use of these thin-film sensors could be extended to perform biological sensing in the future.
{"title":"Labyrinth Metasurface-based Devices for High-sensitivity Thin Film Sensing","authors":"I. Jáuregui-López, P. Rodriguez-Ulibarri, A. Urrutia, S. Kuznetsov, M. Beruete","doi":"10.1109/IRMMW-THz.2019.8873703","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873703","url":null,"abstract":"In this work, two labyrinth metasurfaces with inductive and capacitive behavior operating in the range of the Terahertz (THz) are presented. The high concentration of electric field in these structures led to excellent results for the use of the devices as thin-film sensors. Numerical and experimental studies have been carried out, with excellent sensitivity and Figure of Merit (FOM) results enhancing dramatically those found in the literature. Due to its great behavior, the use of these thin-film sensors could be extended to perform biological sensing in the future.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"3 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82659202","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8874365
K. Nawata, Y. Takida, Y. Tokizane, T. Notake, Zhengli Han, H. Minamide
We developed a security passengers gate using by terahertz-wave screening system. The security gate was based on a gas sensing system with an injection-seeded terahertz-wave parametric generator and was demonstrated with methanol gas in atmosphere detected as a phantom. The measurement was done within one second without disrupting foot traffic.
{"title":"Security screening system based on spectral detection of gas molecules by tunable terahertz-wave","authors":"K. Nawata, Y. Takida, Y. Tokizane, T. Notake, Zhengli Han, H. Minamide","doi":"10.1109/IRMMW-THz.2019.8874365","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874365","url":null,"abstract":"We developed a security passengers gate using by terahertz-wave screening system. The security gate was based on a gas sensing system with an injection-seeded terahertz-wave parametric generator and was demonstrated with methanol gas in atmosphere detected as a phantom. The measurement was done within one second without disrupting foot traffic.","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":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82696374","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8874176
Q. Lin, M. Hakl, S. Pirotta, R. Colombelli, W. Wan, H. Li, J. C. Cao, J. Lampin, E. Peytavit, S. Barbieri
We present our work on the development of high-speed, GaAs-AlGaAs multi-quantum wells photodetectors at $10.3mu text{m}$, based on two-dimensional arrays of patch-antenna resonators. First, the results of FDTD simulations will be presented that allowed to optimize the patch array geometry and fabricate a first generation of detectors with microwave coplanar access. Next, we will report on our initial results from $dc$ optical characterization, namely reflectivity and photocurrent measurements.
{"title":"Development of high-speed, patch-antenna intersubband photodetectors at 10.3μm","authors":"Q. Lin, M. Hakl, S. Pirotta, R. Colombelli, W. Wan, H. Li, J. C. Cao, J. Lampin, E. Peytavit, S. Barbieri","doi":"10.1109/IRMMW-THz.2019.8874176","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874176","url":null,"abstract":"We present our work on the development of high-speed, GaAs-AlGaAs multi-quantum wells photodetectors at $10.3mu text{m}$, based on two-dimensional arrays of patch-antenna resonators. First, the results of FDTD simulations will be presented that allowed to optimize the patch array geometry and fabricate a first generation of detectors with microwave coplanar access. Next, we will report on our initial results from $dc$ optical characterization, namely reflectivity and photocurrent measurements.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"15 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82899366","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8873975
Sergii Romanenko, P. Siegel, L. Hool, A. Harvey, V. Wallace
MMW radiation can be used to focally deposit energy into biological tissue, which converts in it into thermal energy due to high absorption properties, specifically of water. As a result, it can affect the functionality of some biological tissues. Neuronal tissue is one of the most susceptible types due to its high sensitivity to environmental changes, such as electric field and temperature. Here we investigate the effect of MMW mediated heating and conventional thermal heating on action potential voltage initiation in spontaneously active interneuron of leech. The results demonstrate that MMW radiation has a different effect to thermal heating but only at initial stages of sample heating.
{"title":"Differences and Similarities Between Millimetre Wave and Thermal Heating Effect on Action Potential Triggering in Leech Interneuron","authors":"Sergii Romanenko, P. Siegel, L. Hool, A. Harvey, V. Wallace","doi":"10.1109/IRMMW-THz.2019.8873975","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873975","url":null,"abstract":"MMW radiation can be used to focally deposit energy into biological tissue, which converts in it into thermal energy due to high absorption properties, specifically of water. As a result, it can affect the functionality of some biological tissues. Neuronal tissue is one of the most susceptible types due to its high sensitivity to environmental changes, such as electric field and temperature. Here we investigate the effect of MMW mediated heating and conventional thermal heating on action potential voltage initiation in spontaneously active interneuron of leech. The results demonstrate that MMW radiation has a different effect to thermal heating but only at initial stages of sample heating.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"57 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82767457","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8874228
E. Abubakirov, A. Vikharev, Y. Danilov, A. Konyushkov, A. Leontyev
The concept of the amplifier based on double amplification of symmetrical and non-symmetrical modes in relativistic traveling wave tube (TWT) is described. The input signal excites E01 mode which goes through the first pass of amplification. The hybrid HE11 mode is used for the second pass of amplification and output.The simplified model of amplifier is built and theoretical research of the amplifier operation in the Ka band was performed. It was shown that the double pass interaction can provide more than 40 dB of gain along with 30-35% operation efficiency.
{"title":"Project of relativistic mm-wave amplifier with multi-pass interaction","authors":"E. Abubakirov, A. Vikharev, Y. Danilov, A. Konyushkov, A. Leontyev","doi":"10.1109/IRMMW-THz.2019.8874228","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874228","url":null,"abstract":"The concept of the amplifier based on double amplification of symmetrical and non-symmetrical modes in relativistic traveling wave tube (TWT) is described. The input signal excites E01 mode which goes through the first pass of amplification. The hybrid HE11 mode is used for the second pass of amplification and output.The simplified model of amplifier is built and theoretical research of the amplifier operation in the Ka band was performed. It was shown that the double pass interaction can provide more than 40 dB of gain along with 30-35% operation efficiency.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"14 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82798988","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8873870
T. Nagatsuma, M. Sonoda, T. Higashimoto, L. Yi, J. Hesler
This paper addresses a development of 600-GHz band wireless links based on photonics technologies An error-free transmission at a bit rate of $gt12.5$ Gbit/s has been demonstrated for the first time at 720 GHz using a photodiode-based transmitter and a Schottky-barrier-diode mixer receiver.
{"title":"12.5-Gbit/s Wireless Link at 720 GHz Based on Photonics","authors":"T. Nagatsuma, M. Sonoda, T. Higashimoto, L. Yi, J. Hesler","doi":"10.1109/IRMMW-THz.2019.8873870","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873870","url":null,"abstract":"This paper addresses a development of 600-GHz band wireless links based on photonics technologies An error-free transmission at a bit rate of $gt12.5$ Gbit/s has been demonstrated for the first time at 720 GHz using a photodiode-based transmitter and a Schottky-barrier-diode mixer receiver.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"68 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88990690","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 : 2019-09-01DOI: 10.1109/IRMMW-THz.2019.8873808
M. Nagai, Atsushi. Nakane, Hiroyasu Suzukawa, T. Morimoto, M. Ashida
We propose a simple method for magneto-optic spectroscopy in the terahertz frequency regime without the conventional polarization-resolution technique. It is based on the time-domain reflection spectroscopy and employs circularly polarized terahertz light with magnetic field modulation. We experimentally demonstrate it for an InAs substrate. Our demonstration will help to advance multi-purpose characterization techniques for various semiconductors.
{"title":"Terahertz time-domain magneto-optic spectroscopy without the polarization-resolution technique","authors":"M. Nagai, Atsushi. Nakane, Hiroyasu Suzukawa, T. Morimoto, M. Ashida","doi":"10.1109/IRMMW-THz.2019.8873808","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873808","url":null,"abstract":"We propose a simple method for magneto-optic spectroscopy in the terahertz frequency regime without the conventional polarization-resolution technique. It is based on the time-domain reflection spectroscopy and employs circularly polarized terahertz light with magnetic field modulation. We experimentally demonstrate it for an InAs substrate. Our demonstration will help to advance multi-purpose characterization techniques for various semiconductors.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"85 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90171374","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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