Pub Date : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327929
P. Gu, L. M. Zhao, C. Wan, L. Zhang, L. Kang, P. Wu
A new photon-number-resolving superconducting single photon detector is fabricated and tested. To integrate the resistors connected to the nanowire, we used one step of electron-beam lithography and four subsequent photolithography steps. A micro cavity was introduced to the structure in order to gain relatively high quantum efficiency. The device fabricated could resolve 6 photons.
{"title":"Multi-photon response of photon-number-resolving superconducting single photon detector","authors":"P. Gu, L. M. Zhao, C. Wan, L. Zhang, L. Kang, P. Wu","doi":"10.1109/IRMMW-THZ.2015.7327929","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327929","url":null,"abstract":"A new photon-number-resolving superconducting single photon detector is fabricated and tested. To integrate the resistors connected to the nanowire, we used one step of electron-beam lithography and four subsequent photolithography steps. A micro cavity was introduced to the structure in order to gain relatively high quantum efficiency. The device fabricated could resolve 6 photons.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90430551","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327681
D. Corcos, N. Kaminski, D. Elad, T. Morf, Winnie Tatiana Silatsa Saha, U. Drechsler, L. Kull, A. Bischof, Y. Zha
A 19×8 pixel array with a read-out integrated circuit was designed and fabricated in a micro-machined SOI-CMOS process. The pixels are antenna-coupled MOSFET bolometers operating at room temperature in a wide 0.6-1.2 THz band. The read-out circuit features column multiplexed differential amplifiers, offset calibration capability and chopper stabilization. We present the performance of the read-out circuit building blocks, as well as characterization results of the pixels, which demonstrate good detection sensitivity.
{"title":"A 0.6–1.2 THz monolithic imaging array","authors":"D. Corcos, N. Kaminski, D. Elad, T. Morf, Winnie Tatiana Silatsa Saha, U. Drechsler, L. Kull, A. Bischof, Y. Zha","doi":"10.1109/IRMMW-THZ.2015.7327681","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327681","url":null,"abstract":"A 19×8 pixel array with a read-out integrated circuit was designed and fabricated in a micro-machined SOI-CMOS process. The pixels are antenna-coupled MOSFET bolometers operating at room temperature in a wide 0.6-1.2 THz band. The read-out circuit features column multiplexed differential amplifiers, offset calibration capability and chopper stabilization. We present the performance of the read-out circuit building blocks, as well as characterization results of the pixels, which demonstrate good detection sensitivity.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"50 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73569480","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327938
M. Zerbini, F. Causa, A. Doria, G. Gallerano, E. Giovenale, A. Tuccillo, G. Galatola-Teka, F. Cuttaia, M. Johnston
We discuss an extensive set of experimental results about the spectroscopic properties of different materials in THz spectral range, as part of the development of a THz-based Plasma Diagnostic for Nuclear Fusion Applications.
{"title":"Progress on THz applications for Plasma Diagnostics","authors":"M. Zerbini, F. Causa, A. Doria, G. Gallerano, E. Giovenale, A. Tuccillo, G. Galatola-Teka, F. Cuttaia, M. Johnston","doi":"10.1109/IRMMW-THZ.2015.7327938","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327938","url":null,"abstract":"We discuss an extensive set of experimental results about the spectroscopic properties of different materials in THz spectral range, as part of the development of a THz-based Plasma Diagnostic for Nuclear Fusion Applications.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"2010 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73851170","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327623
Y. Shen
Early struggles in the development of THz spectroscopy are reviewed. The field, covering an important spectral region for material characterization, suffered badly from poor lightsources and detectors in the old days, but blossomed rapidly after the arrival of femtosecond lasers. It provides another example how advances of laser technology revolutionize a field.
{"title":"Reflections on the early days of THz spectroscopy","authors":"Y. Shen","doi":"10.1109/IRMMW-THZ.2015.7327623","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327623","url":null,"abstract":"Early struggles in the development of THz spectroscopy are reviewed. The field, covering an important spectral region for material characterization, suffered badly from poor lightsources and detectors in the old days, but blossomed rapidly after the arrival of femtosecond lasers. It provides another example how advances of laser technology revolutionize a field.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"141 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73504456","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327534
C. K. Koch Dandolo, Vincent Cattersel, P. Jepsen
A late 17th century white European lacquered cabinet, attributed to the Gérard Dagly workshop and belonging to the Barbara Piert-Borgers private collection of Far-East and European lacquerware, has been investigated by means of terahertz time domain imaging (THz-TDI), giving new insights into its composition.
{"title":"Terahertz time-domain imaging of a 17th century lacquered cabinet: A contribution to European lacquerwares characterization","authors":"C. K. Koch Dandolo, Vincent Cattersel, P. Jepsen","doi":"10.1109/IRMMW-THZ.2015.7327534","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327534","url":null,"abstract":"A late 17th century white European lacquered cabinet, attributed to the Gérard Dagly workshop and belonging to the Barbara Piert-Borgers private collection of Far-East and European lacquerware, has been investigated by means of terahertz time domain imaging (THz-TDI), giving new insights into its composition.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"367 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74184285","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327580
C. Ponseca, V. Sundstrom
The need for developing highly efficient solar cell devices have never been so pressing until recently when the urgency of using renewable energy sources becomes more evident. There are several promising technologies being explored by many groups with the sole purpose of optimizing harvesting sunlight and converting it to useful electricity. These include, but not limited to, dye- and quantum dot-sensitized, bulk heterojunction organic, inorganic nanowires, and very recently perovskite-based solar cells. In this talk, charge carrier dynamics of an assortment of solar cell technologies probed using time-resolved terahertz spectroscopy will be presented. Electron injection, mobility, charge carrier lifetime and recombination dynamics will be discussed.
{"title":"Understanding charge carrier dynamics in solar cell materials using time resolved terahertz spectroscopy","authors":"C. Ponseca, V. Sundstrom","doi":"10.1109/IRMMW-THZ.2015.7327580","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327580","url":null,"abstract":"The need for developing highly efficient solar cell devices have never been so pressing until recently when the urgency of using renewable energy sources becomes more evident. There are several promising technologies being explored by many groups with the sole purpose of optimizing harvesting sunlight and converting it to useful electricity. These include, but not limited to, dye- and quantum dot-sensitized, bulk heterojunction organic, inorganic nanowires, and very recently perovskite-based solar cells. In this talk, charge carrier dynamics of an assortment of solar cell technologies probed using time-resolved terahertz spectroscopy will be presented. Electron injection, mobility, charge carrier lifetime and recombination dynamics will be discussed.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"99 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77563538","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327705
N. Oda, Takayuki Sudou, T. Morimoto, T. Ishi, Syuichi Okubo, G. Isoyama, A. Irizawa, K. Kawase, R. Kato
Both 640×480 and 320×240 terahertz (THz) imagers were developed whose sensitivity were improved in sub-THz region by a factor of 10. The imagers include functions such as external-trigger imaging, lock-in imaging, beam profiling and so forth. The function of the external-trigger imaging was verified, using the pulsed THz free electron laser developed by Osaka University.
{"title":"Externally triggered terahertz imaging for microbolometer focal plane array","authors":"N. Oda, Takayuki Sudou, T. Morimoto, T. Ishi, Syuichi Okubo, G. Isoyama, A. Irizawa, K. Kawase, R. Kato","doi":"10.1109/IRMMW-THZ.2015.7327705","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327705","url":null,"abstract":"Both 640×480 and 320×240 terahertz (THz) imagers were developed whose sensitivity were improved in sub-THz region by a factor of 10. The imagers include functions such as external-trigger imaging, lock-in imaging, beam profiling and so forth. The function of the external-trigger imaging was verified, using the pulsed THz free electron laser developed by Osaka University.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"79 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74209322","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327395
X. Neiers, P. Jeunesse, U. Schmidhammer
We apply single shot THz Time Domain Spectroscopy to control glass fiber reinforced plastics that were machined during their production. The THz imaging reveals that the mechanical processing as hole punching introduced significant modifications to the composite structures, also beyond the directly impacted region. These changes can be precisely localized and further characterized in order to classify the types of defect. The results show that the time of flight information is particularly sensitive to changes in the complex fiber and polymer matrix network. They can be visualized and quantified with B- and C-scans. Thanks to the ultrashort duration and high repetition rate of acquisition, the single shot technology is suited for the control of composites within cycle time of industrial production.
{"title":"Rapid control of machined glass fiber reinforced plastics by single shot terahertz time domain spectroscopy","authors":"X. Neiers, P. Jeunesse, U. Schmidhammer","doi":"10.1109/IRMMW-THZ.2015.7327395","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327395","url":null,"abstract":"We apply single shot THz Time Domain Spectroscopy to control glass fiber reinforced plastics that were machined during their production. The THz imaging reveals that the mechanical processing as hole punching introduced significant modifications to the composite structures, also beyond the directly impacted region. These changes can be precisely localized and further characterized in order to classify the types of defect. The results show that the time of flight information is particularly sensitive to changes in the complex fiber and polymer matrix network. They can be visualized and quantified with B- and C-scans. Thanks to the ultrashort duration and high repetition rate of acquisition, the single shot technology is suited for the control of composites within cycle time of industrial production.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"20 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74242840","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327612
F. Kadlec, C. Kadlec, J. Buršík, J. Vít, V. Goian, J. Prokleška, M. Kempa, F. Borodavka, S. Rols, S. Kamba
THz, infrared and inelastic neutron scattering spectra of Z-hexaferrite ceramics were measured in a broad range of temperatures. A sharp electromagnon is observed near 1THz, vanishing with increasing magnetic field until a phase transition occurs at H ≈ 2T. Then, another strong peak whose resonance frequency is linearly proportional to the magnetic field turns up from the sub-THz range. We assign this peak to a ferrimagnetic resonance.
{"title":"Spin and lattice excitations of multiferroic (Ba0.2Sr0.8)3Co2Fe24O41 in the THz range","authors":"F. Kadlec, C. Kadlec, J. Buršík, J. Vít, V. Goian, J. Prokleška, M. Kempa, F. Borodavka, S. Rols, S. Kamba","doi":"10.1109/IRMMW-THZ.2015.7327612","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327612","url":null,"abstract":"THz, infrared and inelastic neutron scattering spectra of Z-hexaferrite ceramics were measured in a broad range of temperatures. A sharp electromagnon is observed near 1THz, vanishing with increasing magnetic field until a phase transition occurs at H ≈ 2T. Then, another strong peak whose resonance frequency is linearly proportional to the magnetic field turns up from the sub-THz range. We assign this peak to a ferrimagnetic resonance.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"101 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80436669","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 : 2015-11-12DOI: 10.1109/IRMMW-THZ.2015.7327947
A. Kanno, N. Sekine, Y. Uzawa, I. Hosako, T. Kawanishi
Envelope-detector-based transceiver configurations are useful for both digital signal transmission and radar systems in the terahertz band. A dual-purpose transceiver is demonstrated using a 1-Gb/s on-off keying signal and 12.5-GHz-bandwidth frequency-modulated continuous-wave radar.
{"title":"300-GHz versatile transceiver front-end for both communication and imaging","authors":"A. Kanno, N. Sekine, Y. Uzawa, I. Hosako, T. Kawanishi","doi":"10.1109/IRMMW-THZ.2015.7327947","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2015.7327947","url":null,"abstract":"Envelope-detector-based transceiver configurations are useful for both digital signal transmission and radar systems in the terahertz band. A dual-purpose transceiver is demonstrated using a 1-Gb/s on-off keying signal and 12.5-GHz-bandwidth frequency-modulated continuous-wave radar.","PeriodicalId":6577,"journal":{"name":"2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)","volume":"90 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75522607","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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