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2011 International Conference on Infrared, Millimeter, and Terahertz Waves最新文献

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Probe shape effect on near-field enhancement in apertureless terahertz near-field microscope 探针形状对无孔径太赫兹近场显微镜近场增强的影响
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104848
V. N. Trukhin, A. Golubok, L. L. Samoilov
{"title":"Probe shape effect on near-field enhancement in apertureless terahertz near-field microscope","authors":"V. N. Trukhin, A. Golubok, L. L. Samoilov","doi":"10.1109/IRMMW-THZ.2011.6104848","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6104848","url":null,"abstract":"We report on the experimental study of the probe shape dependency on terahertz near-field enhancement near the tip of a metallic probe in the apertureless terahertz scanning near-field microscope. It was established that terahertz near-field signal is strongly controlled by the cone shape of the probe and varies by an order of magnitude depending on the shape of the probe.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"227 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75167342","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
Increasing the bandwidth of planar on-chip THz devices for spectroscopic applications 增加用于光谱应用的平面片上太赫兹器件的带宽
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105173
C. Russell, C. Wood, L. Dazhang, A. Burnett, L. Li, E. Linfield, A. Davies, J. Cunningham
{"title":"Increasing the bandwidth of planar on-chip THz devices for spectroscopic applications","authors":"C. Russell, C. Wood, L. Dazhang, A. Burnett, L. Li, E. Linfield, A. Davies, J. Cunningham","doi":"10.1109/IRMMW-THZ.2011.6105173","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6105173","url":null,"abstract":"We demonstrate an increase in bandwidth, from 600 GHz to 1.5 THz, of planar Goubau-line on-chip devices with integrated low-temperature-grown (LT) GaAs photoconductive (PC) switches, using a substrate-thinning technique. The effect of substrate thinning was investigated both experimentally and theoretically, and the increase in bandwidth then used for spectroscopy of overlaid polycrystalline materials.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"25 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78301139","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
Next generation continuous wave photomixing THz systems 下一代连续波太赫兹光谱学系统
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105046
T. Gobel, D. Stanze, R. Dietz, H. Roehle, M. Schlak, B. Sartorius, M. Schell
{"title":"Next generation continuous wave photomixing THz systems","authors":"T. Gobel, D. Stanze, R. Dietz, H. Roehle, M. Schlak, B. Sartorius, M. Schell","doi":"10.1109/IRMMW-THZ.2011.6105046","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6105046","url":null,"abstract":"Telecom components and electro-optic THz phase control allow the realization of an integrated THz control unit. It enables to control any parameter of the THz signal in CW THz photomixing systems with standard electronic equipment. This significantly reduces size and cost of future CW THz systems.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"6 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75126113","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
Development of a chip-based micromachined THz-spectrometer 基于芯片的微机械太赫兹光谱仪的研制
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104948
Xiaohuan Fu, K. Attenkofer, T.T.Y. Wong
{"title":"Development of a chip-based micromachined THz-spectrometer","authors":"Xiaohuan Fu, K. Attenkofer, T.T.Y. Wong","doi":"10.1109/IRMMW-THZ.2011.6104948","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6104948","url":null,"abstract":"We present a coplanar waveguide design with integrated photoconductive transceivers; the system is fabricated on a 1.4-μm-thick SiO2/Si3N4 membrane supported by a micromachined silicon substrate. LTG GaAs is used as photon absorbing material of the photoconductive switches allowing full electron mobility at strongly reduced carrier-lifetime. By combining this circuit with a bonded sample cell, we are able to measure transmitted, reflected intensity and its phase correlations. The system was characterized by theoretical calculation and simulations.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"36 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75575457","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
Deforming and relief interferometric SAR imaging at W-band w波段变形与起伏干涉SAR成像
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104977
J. Abril, E. Nova, A. Broquetas, A. Aguasca, J. Romeu, L. Jofre
{"title":"Deforming and relief interferometric SAR imaging at W-band","authors":"J. Abril, E. Nova, A. Broquetas, A. Aguasca, J. Romeu, L. Jofre","doi":"10.1109/IRMMW-THZ.2011.6104977","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6104977","url":null,"abstract":"Interferometry at W Band can be exploited to form images of small deformations with precisions in the order of tenths of microns and retrieve surface relieves. An Interferometric Synthetic Aperture Radar setup is proposed in which the scattered field is focused using a combination of range compression and backpropagation algorithm. Interferometric images involving micrometric displacements have been obtained showing a good agreement between real and measured displacements. A metallic rough surface deformation test has been first performed, by imaging the phase difference between acquisitions before and after the displacement. The interferometric phase difference between acquisitions can be used to image local deformations from a range of several meters. Furthermore the interferogram coherence shows the degree of decorrelation of the radar reflectivity which provides valuable information for surface random change. Likewise the relief of the surface with an L-shape target is retrieved mapping the phase difference between the two receiving antennas, in this case an static scenario is required.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"26 3 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73232612","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
Mode profiling of THz fibers with dynamic aperture near-field imaging 太赫兹光纤动态孔径近场成像模式分析
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105088
M. Stecher, Stefan F. Durrschmidt, K. Nielsen, A. Stefani, H. K. Rasmussen, P. Jepsen, G. Town, O. Bang, M. Koch
{"title":"Mode profiling of THz fibers with dynamic aperture near-field imaging","authors":"M. Stecher, Stefan F. Durrschmidt, K. Nielsen, A. Stefani, H. K. Rasmussen, P. Jepsen, G. Town, O. Bang, M. Koch","doi":"10.1109/IRMMW-THZ.2011.6105088","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6105088","url":null,"abstract":"We present terahertz near-field mode profiling of different polymer THz fibers. Images with a resolution below the THz wavelength show the fundamental mode profile and higher order modes appearing at higher frequencies.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"20 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73236927","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
200 MHz DNP NMR spectroscopy with a 131 GHz gyrotron for the analysis of polymer surface 200 MHz DNP核磁共振波谱与131 GHz回旋管分析聚合物表面
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6104885
F. Horii, T. Idehara, Y. Fujii, I. Ogawa, A. Horii, G. Entzminger, F. D. Doty
{"title":"200 MHz DNP NMR spectroscopy with a 131 GHz gyrotron for the analysis of polymer surface","authors":"F. Horii, T. Idehara, Y. Fujii, I. Ogawa, A. Horii, G. Entzminger, F. D. Doty","doi":"10.1109/IRMMW-THZ.2011.6104885","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6104885","url":null,"abstract":"Dynamic nuclear polarization (DNP) with a 131.5 GHz gyrotron (Gyrotron FU CW IV) has achieved enhancement factor of around 30 by using stable mono-radical 4-amino-TEMPO for 200 MHz high-resolution solid-state NMR spectroscopy for the analysis of polymer surface. Dependencies of the enhancement factor on irradiation time of the gyrotron output, the power of irradiation, cooling time, and irradiation frequency are examined. Application of the 200 MHz DNP NMR spectroscopy to the analysis of polymer surface is also presented briefly.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"57 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74506240","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: 4
High quality factor mm-wave coplanar strip resonator based on split ring resonators 基于裂环谐振器的高品质因数毫米波共面条形谐振器
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105225
A. K. Horestani, Z. Shaterian, S. Al-Sarawi, D. Abbott
{"title":"High quality factor mm-wave coplanar strip resonator based on split ring resonators","authors":"A. K. Horestani, Z. Shaterian, S. Al-Sarawi, D. Abbott","doi":"10.1109/IRMMW-THZ.2011.6105225","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6105225","url":null,"abstract":"Coplanar strips (CPS) have the advantage of higher level of integration and a balanced structure that have favorable features for integrated voltage controlled oscillators and low noise and power amplifiers. Based on split ring resonator's (SRRs) rejection and phase shift properties around their resonance, a high quality factor composite right/left handed (CRLH) coplanar strips resonator is designed to operate in mm-wave regime at 60 GHz. Using this structure, a 52% improvement is achieved in comparison with an optimized conventional CPS resonator designed in a 90 nm CMOS process.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"23 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74563005","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
Picosecond time scale solvent fluctuations and enzymatic regulation in hen egg white lysozyme ligand reactions 蛋清溶菌酶配体反应的皮秒时间尺度溶剂波动和酶调节
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105252
Bediha Besar, K. Woods
{"title":"Picosecond time scale solvent fluctuations and enzymatic regulation in hen egg white lysozyme ligand reactions","authors":"Bediha Besar, K. Woods","doi":"10.1109/IRMMW-THZ.2011.6105252","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6105252","url":null,"abstract":"Experimental THz experiments on hen egg-white lysozyme (HEWL) with and without the ligand NAG3 has revealed that the protein's solvent structure on the picosecond time scale is in integral part of the regulation mechanism of the enzyme. Our investigation into the low frequency dynamics of the protein has uncovered that the counterions in the solvent shell mediate the collective dynamics of both the water and the protein in the system. As a result, we find that the lysozyme fast dynamics is strongly influenced by fast water (H — bonding) dynamics. Both the activity and structure of the water change with addition of the ligand. Perhaps most intriguing is that we find that the long range correlation between distant parts of protein are broken with the addition of the inhibitor; which coincides with the disruption of energy dispersion in the solvent hydrogen bonding network.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"43 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84719186","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
Ultrafast photoconductors based on plasmonic gratings 基于等离子体光栅的超快光导体
2011 International Conference on Infrared, Millimeter, and Terahertz Waves Pub Date : 2011-12-15 DOI: 10.1109/IRMMW-THZ.2011.6105050
C. Berry, M. Jarrahi
{"title":"Ultrafast photoconductors based on plasmonic gratings","authors":"C. Berry, M. Jarrahi","doi":"10.1109/IRMMW-THZ.2011.6105050","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2011.6105050","url":null,"abstract":"We present an ultrafast photoconductor that offers significantly higher quantum efficiencies compared to conventional photoconductors. The ultrafast response is achieved by excitation of surface plasmon waves, localizing a major portion of the incident light near photoconductor contact electrodes.","PeriodicalId":6353,"journal":{"name":"2011 International Conference on Infrared, Millimeter, and Terahertz Waves","volume":"55 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2011-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84782631","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: 27
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