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

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A Broadband Q-band Dual-Circular Polarizer for Millimeter-Wave VLBI Observations 用于毫米波VLBI观测的宽带q波段双圆偏振器
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874182
M. Chung
{"title":"A Broadband Q-band Dual-Circular Polarizer for Millimeter-Wave VLBI Observations","authors":"M. Chung","doi":"10.1109/IRMMW-THz.2019.8874182","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874182","url":null,"abstract":"A 33~50 GHz dual-circular polarizer combining of an OMT(Orthomode Transducer) and a 90-deg differential phase shifter has been developed for Korean VLBI Network. The OMT is based on curved double-ridge structure and the phase shifter is designed using quad-ridge waveguide. The bandwidth of the designed circular polarizer is around 41 %.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"36 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":"88806568","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
Investigation of Multilayered 20th Century Painting by THz Imaging 太赫兹成像对20世纪多层绘画的研究
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8873825
K. Fukunaga, Yoshimi Ueno, Yasunobu Ito
{"title":"Investigation of Multilayered 20th Century Painting by THz Imaging","authors":"K. Fukunaga, Yoshimi Ueno, Yasunobu Ito","doi":"10.1109/IRMMW-THz.2019.8873825","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873825","url":null,"abstract":"A masterpiece of Salvador Dalí was investigated by using Terahertz time-domain imaging. The experimental results confirmed its multilayered structure and suggested that Dalí did not cover the entire canvas because the number of painted layers depends on the area. The painting was supported with a lining layer and a metal plate added in previous intervention, and its structure was compared with that of another 20th century masterpiece painted by Pablo Picasso.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"34 4","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91407112","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
THz dielectric photonic crystal with double lattice 双晶格太赫兹介电光子晶体
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874136
D. Gomon, P. Demchenko, M. Khodzitsky
{"title":"THz dielectric photonic crystal with double lattice","authors":"D. Gomon, P. Demchenko, M. Khodzitsky","doi":"10.1109/IRMMW-THz.2019.8874136","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874136","url":null,"abstract":"nowadays there is a strong necessity of cheap and compact THz components for various THz applications. Photonic crystals (PC) are perspective candidate for this role. In this work we show ability to manipulate broadening of PC band gap by superposition of two different PC lattices.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"53 2","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":"91434772","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-Speed Modulation of a Terahertz Quantum Cascade Laser Using Coherent Acoustic Phonon Pulses 利用相干声子脉冲高速调制太赫兹量子级联激光器
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874441
Aniela Dunn, C. Poyser, P. Dean, Aleksandar Demić, A. Valavanis, D. Indjin, M. Salih, I. Kundu, Lianhe H. Li, A. Akimov, G. Davies, E. Linfield, J. Cunningham, A. Kent
{"title":"High-Speed Modulation of a Terahertz Quantum Cascade Laser Using Coherent Acoustic Phonon Pulses","authors":"Aniela Dunn, C. Poyser, P. Dean, Aleksandar Demić, A. Valavanis, D. Indjin, M. Salih, I. Kundu, Lianhe H. Li, A. Akimov, G. Davies, E. Linfield, J. Cunningham, A. Kent","doi":"10.1109/IRMMW-THz.2019.8874441","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874441","url":null,"abstract":"We demonstrate a new method for high-speed modulation of terahertz emission and electronic transport of a Ga(Al)As quantum cascade laser using coherent acoustic phonon pulses. The modulation, which is on the order of 6%, can be partially explained by a perturbation-theory analysis. The < 1 ns rise time of the modulation is dominated by parasitic device impedance in our experiment, however, the fast transit of phonons through the QCL heterostructure imply modulation rates > 100 GHz are possible.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"39 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":"83134509","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
IRMMW-THz 2019 Venue Floor Plan IRMMW-THz 2019场地平面图
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/irmmw-thz.2019.8873717
{"title":"IRMMW-THz 2019 Venue Floor Plan","authors":"","doi":"10.1109/irmmw-thz.2019.8873717","DOIUrl":"https://doi.org/10.1109/irmmw-thz.2019.8873717","url":null,"abstract":"","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"86 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80588073","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
Preparation of the Quantum Correlated Optical-Terahertz Biphotons 量子相关光-太赫兹双光子的制备
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874091
K. Kuznetsov, A. Leontyev, T. Novikova, A. A. Gaysarov, V. Sultanov, A. Rudyak, G. Kitaeva
{"title":"Preparation of the Quantum Correlated Optical-Terahertz Biphotons","authors":"K. Kuznetsov, A. Leontyev, T. Novikova, A. A. Gaysarov, V. Sultanov, A. Rudyak, G. Kitaeva","doi":"10.1109/IRMMW-THz.2019.8874091","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874091","url":null,"abstract":"We study the conditions necessary for generating non-classical optical-terahertz biphotons by means of spontaneous parametric down-conversion. Using a hot electron bolometer we demonstrate detection of the THz-frequency idler waves generated under parametric up- and down-conversion with a record low gain. Complete disappearance of the classical contribution has been observed at low temperatures. A second-order biphoton correlation function is analyzed.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"52 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":"81024491","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
THz Multi-Layer Imaging via Nonlinear Inverse Scattering 基于非线性逆散射的太赫兹多层成像
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874118
A. Bose, A. Kadu, H. Mansour, Pu (Perry) Wang, P. Boufounos, P. Orlik, M. Soltanalian
{"title":"THz Multi-Layer Imaging via Nonlinear Inverse Scattering","authors":"A. Bose, A. Kadu, H. Mansour, Pu (Perry) Wang, P. Boufounos, P. Orlik, M. Soltanalian","doi":"10.1109/IRMMW-THz.2019.8874118","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874118","url":null,"abstract":"In this paper, we address the problem of mitigating nonlinear shadow effects in Terahertz time-domain spectroscopy (THz-TDS) multi-layer imaging. To that end, we utilize a one-dimensional (1D) nonlinear model to capture the interaction between the dielectric permittivity profile and the THz wavefield and recover the multi-layer structure by solving a 1D nonlinear inverse scattering via iterative and sequential optimization over frequencies. Numerical results confirm the effectiveness of the proposed method.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"25 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":"88573822","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
A 240 GHz Receiver with 6 Gb/s Data Rate Based on Plasma Wave Detection in SiGe Technology 基于SiGe技术等离子体波检测的6gb /s数据速率240ghz接收机
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8873996
Kefei Wu, G. Ducournau, M. Hella
{"title":"A 240 GHz Receiver with 6 Gb/s Data Rate Based on Plasma Wave Detection in SiGe Technology","authors":"Kefei Wu, G. Ducournau, M. Hella","doi":"10.1109/IRMMW-THz.2019.8873996","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8873996","url":null,"abstract":"This paper presents a fully integrated 240 GHz plasma-wave Field Effect Transistor (FET) direct-detector receiver, implemented in 130 nm Silicon Germanium (SiGe) technology (fT/fmax = 210/250 GHz). The receiver chain is formed of an on-chip patch antenna, plasma-wave detector, and a broadband amplifier. The low modulation frequency characterization shows a responsivity of 15 V/W at 240 GHz, with a drain bias current of 2μ A. The responsivity is higher than 10 V/W from 225 GHz to 250 GHz. When measured with modulated signals at a carrier frequency of 240 GHz, the detected signal shows a clear eye diagram at a data rate up to 6 Gb/s with a bit error rate less than 10-5.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"39 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":"88653569","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: 5
On the Prospects for the Study of a Point Discharge Sustained by a Terahertz Free Electron Laser Radiation in an Inhomogeneous Gas Flow 论太赫兹自由电子激光在非均匀气体流动中持续点放电的研究前景
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874193
A. Vodopyanov, A. Sidorov, A. Veselov, V. Kubarev, O. Shevchenko, Y. Gorbachev
{"title":"On the Prospects for the Study of a Point Discharge Sustained by a Terahertz Free Electron Laser Radiation in an Inhomogeneous Gas Flow","authors":"A. Vodopyanov, A. Sidorov, A. Veselov, V. Kubarev, O. Shevchenko, Y. Gorbachev","doi":"10.1109/IRMMW-THz.2019.8874193","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874193","url":null,"abstract":"It is proposed to use high-power radiation from a terahertz free electron laser to create a localized (point-like) discharge in an inhomogeneous gas flow. Plasma parameters that can be achieved in such a system open up prospects for creating an effective point-like source of extreme ultraviolet light for the next-generation projection lithography.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"8 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":"84692725","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
Determining DHO detection limits for a frequency domain THz spectrometer coupled to a light-weight multi-pass sample cell 确定频率域太赫兹光谱仪耦合到轻型多通样品池的DHO检测限
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2019-09-01 DOI: 10.1109/IRMMW-THz.2019.8874469
J. R. Demers, E. Dale
{"title":"Determining DHO detection limits for a frequency domain THz spectrometer coupled to a light-weight multi-pass sample cell","authors":"J. R. Demers, E. Dale","doi":"10.1109/IRMMW-THz.2019.8874469","DOIUrl":"https://doi.org/10.1109/IRMMW-THz.2019.8874469","url":null,"abstract":"A fringe-free, frequency domain terahertz spectrometer connected to a custom fabricated, light-weight multi-meter multi-pass sample cell was employed to measure the 1.492 THz, 1.507 THz and 1.523 THz molecular transitions of DHO over various pressures. We will report on the detectable concentrations of the DHO achieved with the portable instrument.","PeriodicalId":6686,"journal":{"name":"2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"90 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":"86798040","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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