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2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)最新文献

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Photothermal Conversion and Fast Response Properties of 3D Graphene Foam in the Terahertz Range 太赫兹范围内三维石墨烯泡沫的光热转换和快速响应特性
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510128
Meng Chen, Yingxin Wang, Fei Fan, Yi Huang, Ziran Zhao
{"title":"Photothermal Conversion and Fast Response Properties of 3D Graphene Foam in the Terahertz Range","authors":"Meng Chen, Yingxin Wang, Fei Fan, Yi Huang, Ziran Zhao","doi":"10.1109/IRMMW-THZ.2018.8510128","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510128","url":null,"abstract":"Fast terahertz response of three dimensional graphene foam through photothermoelectric effect is reported in this work with its photothermal conversion property investigated by infrared thermal imaging. A great temperature rise of 70 K (1.25 W/cm2, 2.52 THz) was obtained with a small thermal diffusion length scale of 0.7 mm and a short response time of 21 ms. This material can be used as an ideal absorber for terahertz thermal detector and experiment results proved that the photothermoelectric response of a single-layer graphene can be enhanced six times with a small block of three dimensional graphene foam adhering to it.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"56 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89634210","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
$beta$ -BBO: Optical Properties and Phase-Matching for THz Wave Generation $beta$ -BBO:太赫兹波产生的光学特性和相位匹配
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510284
A. Mamrashev, N. Nikolaev, V. Antsygin, T. Bekker, A. Kokh, K. Kokh, G. Lanskii, V. Svetlichny, Y. Andreev
{"title":"$beta$ -BBO: Optical Properties and Phase-Matching for THz Wave Generation","authors":"A. Mamrashev, N. Nikolaev, V. Antsygin, T. Bekker, A. Kokh, K. Kokh, G. Lanskii, V. Svetlichny, Y. Andreev","doi":"10.1109/IRMMW-THZ.2018.8510284","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510284","url":null,"abstract":"Optical properties of $beta$ -BBO crystals i. e. absorption coefficient and refractive index dispersions, were studied using a custom-made terahertz time-domain spectrometer (THz-TDS) in the range of 0.2-2.0 THz at the room temperature (RT) of 293 K and at liquid nitrogen (LN) temperature of 81 K. The measured ordinary and extraordinary wave refractive indices were approximated in the form of Sellmeier equations. Phase-matching conditions for the IR- THz and THz- THz frequency conversion were calculated.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"15 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89734338","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 Millimeter-Wave Electron-Spin- Resonance Measurement Apparatus for Ultralow Temperatures and Its Application to Measurements of CuPzN 超低温毫米波电子自旋共振测量仪的研制及其在铜锌测量中的应用
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510216
Y. Ishikawa, Y. Fujii, K. Ohya, Y. Koizumi, S. Mitsudo, T. Mizusaki, S. Miura, T. Asano, H. Kikuchi, A. Fukuda, A. Matsubara, H. Yamamori
{"title":"Development of Millimeter-Wave Electron-Spin- Resonance Measurement Apparatus for Ultralow Temperatures and Its Application to Measurements of CuPzN","authors":"Y. Ishikawa, Y. Fujii, K. Ohya, Y. Koizumi, S. Mitsudo, T. Mizusaki, S. Miura, T. Asano, H. Kikuchi, A. Fukuda, A. Matsubara, H. Yamamori","doi":"10.1109/IRMMW-THZ.2018.8510216","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510216","url":null,"abstract":"We have developed a millimeter-wave electron spin resonance (ESR) measurement system using a 3He- 4He dilution refrigerator for the ultralow-temperature range below 1 K. The currently available frequency range is 125–130 GHz. The frequency can be changed by adjusting the distance between the mirrors using a piezoelectric actuator. Using this apparatus, we performed ESR measurements on a Heisenberg quantum-spin chain - copper pyrazine dinitrate (CuPzN for short), Cu(C4H4N2)(NO3)2 - over the temperature range from 6.6 down to 0.25 K. The ESR lines shift continuously with decreasing temperature. The results suggest that the ESR spectrum of CuPzN is possibly useful as a temperature sensor below 1 K.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89744715","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
Third harmonic generation from InSb excited by Free Electron Laser 自由电子激光激发InSb产生的三次谐波
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8509972
T. Phan, Kosaku Kato, G. Isoyama, M. Yoshimura, S. Fujioka, M. Nakajima
{"title":"Third harmonic generation from InSb excited by Free Electron Laser","authors":"T. Phan, Kosaku Kato, G. Isoyama, M. Yoshimura, S. Fujioka, M. Nakajima","doi":"10.1109/IRMMW-THZ.2018.8509972","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8509972","url":null,"abstract":"Using intense beam with frequency 4 THz from Free Electron Laser to pump the InSb crystal, we obtained strong third harmonic generation (THG) with efficiency up to $4 mathrm{x}10^{-4}$ at room temperature. The THG can originate from the nonlinear third order electric current due to non-parabolicity of the band structure in InSb. InSb yields significantly higher THG signal compared with InAs whose shape of energy band structure is more parabolic. The THG signal increases up to 2.5 times at 370 K due to the increase of the free carrier.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"70 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90360044","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
Optical Generation of High-power Terahertz Pulses for Tunable Wave Source 用于可调谐波源的高功率太赫兹脉冲的光产生
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8509918
I. Yoshimine, M. Yamashita, H. Hoshina, Mikiko Saito, H. Minamide, C. Otani
{"title":"Optical Generation of High-power Terahertz Pulses for Tunable Wave Source","authors":"I. Yoshimine, M. Yamashita, H. Hoshina, Mikiko Saito, H. Minamide, C. Otani","doi":"10.1109/IRMMW-THZ.2018.8509918","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8509918","url":null,"abstract":"High-power terahertz pulse generation and its polarization and frequency control by optical rectification with nonlinear organic crystals were studied. Terahertz pulses up to 730 nJ/pulse was generated from a DAST crystal pumped by 250 $mu mathbf{J}$ femotosecond laser pulses with a central wavelength of 1500 nm. The terahertz peak electric field is estimated as 860 kV/cm if we focus the terahertz beam to $phi = 300mu mathrm{m}$ spot, which is expected to nonlinear material control application. We proposed the high-power terahertz polarization pulse shaping using the double stacked nonlinear organic crystals excited with tailored pump pulses. Through the terahertz modulation of pump pulses, the waveform shaping of the high-power terahertz pulses are expected, which leads to selective excitation of molecules or spin waves.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"97 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90366036","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 modulators based on the active GaN-HEMT metasurface 基于有源GaN-HEMT超表面的太赫兹调制器
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510452
Yuncheng Zhao, Y. Zhan, S. Liang, Zhihong Feng, Ziqiang Yang
{"title":"THz modulators based on the active GaN-HEMT metasurface","authors":"Yuncheng Zhao, Y. Zhan, S. Liang, Zhihong Feng, Ziqiang Yang","doi":"10.1109/IRMMW-THZ.2018.8510452","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510452","url":null,"abstract":"In this paper, we present a series of composite metamaterial THz modulators that combine optimized metallic metasurface with AlGaN/GaN heterostructure array to realize the amplitude and phase modulation of terahertz waves. Embedded with the nanostructured 2DEG layer of GaN HEMT, the resonance intensity and surface current circuit of the resonant modes in the metamaterial unit can be dynamically manipulated by electrical control of the carrier distribution and depletion of the 3 nm-2DEG. In real-time dynamic tests, THz spatial amplitude modulator achieves 93% modulation depth and 3 GHz modulation speed. THz spatial phase modulator achieves a 137 degree phase shift with an external controlling voltage of only several volts in the THz transmission mode.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"25 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73469525","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
Subwavelength fiber: Enhanced THz Magnetic Source 亚波长光纤:增强型太赫兹磁源
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510187
S. Atakaramians, I. Shadrivov, A. Miroshnichenko, A. Stefani, H. Ebendorff‐Heidepriem, T. Monro, S. V.
{"title":"Subwavelength fiber: Enhanced THz Magnetic Source","authors":"S. Atakaramians, I. Shadrivov, A. Miroshnichenko, A. Stefani, H. Ebendorff‐Heidepriem, T. Monro, S. V.","doi":"10.1109/IRMMW-THZ.2018.8510187","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510187","url":null,"abstract":"We experimentally demonstrate that an enhanced THz magnetic source can be achieved by placing a subwavelength fiber in front of a sub-wavelength aperture illuminated by a THz plane wave. This hybrid system can be considered as a unit cell of metasurfaces for THz wave manipulation and can also be scaled to optical frequencies opening up avenues for developing fiber based optical devices such as nanoantenna and laser.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"23 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76691047","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
Infrared modulators based on liquid crystals 基于液晶的红外调制器
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8509943
U. Chodorow, R. Mazur, P. Morawiak, W. Piecek, P. Kula, P. Harmata, P. Martyniuk
{"title":"Infrared modulators based on liquid crystals","authors":"U. Chodorow, R. Mazur, P. Morawiak, W. Piecek, P. Kula, P. Harmata, P. Martyniuk","doi":"10.1109/IRMMW-THZ.2018.8509943","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8509943","url":null,"abstract":"In this work liquid crystal (LC) modulators are considered. First one is based on electrically controlled birefringence (ECB) effect. A transducer with the thickness of 59 μm was prepared and liquid crystal material designed for infrared applications was used. The LC material shows mesomorphic phase in the room temperature and it has decreased absorption bands in the mid-infrared range (3 – 5 μm). The other considered modulator is a Fabry-Perot interferometer which can be used as a narrow band filter.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"10 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76799206","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
Development of the Cyclotron Radiation Source with Vortex property 具有旋涡特性的回旋加速器辐射源的研制
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510138
Y. Goto, S. Kubo, T. Tsujimura
{"title":"Development of the Cyclotron Radiation Source with Vortex property","authors":"Y. Goto, S. Kubo, T. Tsujimura","doi":"10.1109/IRMMW-THZ.2018.8510138","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510138","url":null,"abstract":"Recently it has been shown that the radiation from a charged particle in spiral motion has vortex property. Although the cyclotron emission exists universally in nature, the vortex property has not been featured because this property is normally cancelled out due to the randomness in the gyro-phase of electrons. In order to generate the vortex radiation from mul-ti-electron in cyclotron motion, we are developing a method to control the gyro-phase by the high power gyrotron. The electrons which have cyclotron motion around the magnetic field can be phase-matched by interaction with the external high power circularly polarized gyrotron beam. The coherent radiation can be obtained from these phase matched electrons.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"290 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76877018","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
Boson Peak and Fracton of Sodium Carboxymethyl Starch Detected by Terahertz Time-Domain and Low-Frequency Raman Spectroscopies 太赫兹时域和低频拉曼光谱检测羧甲基淀粉钠的玻色子峰和分数
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2018-09-01 DOI: 10.1109/IRMMW-THZ.2018.8510157
Wakana Terao, Tatsuya Mori, Seiji Koiima, K. Kaczmarska, B. Grabowska, Y. Fujii, A. Koreeda, J. Ko
{"title":"Boson Peak and Fracton of Sodium Carboxymethyl Starch Detected by Terahertz Time-Domain and Low-Frequency Raman Spectroscopies","authors":"Wakana Terao, Tatsuya Mori, Seiji Koiima, K. Kaczmarska, B. Grabowska, Y. Fujii, A. Koreeda, J. Ko","doi":"10.1109/IRMMW-THZ.2018.8510157","DOIUrl":"https://doi.org/10.1109/IRMMW-THZ.2018.8510157","url":null,"abstract":"We performed terahertz time-domain spectroscopy and low-frequency Raman scattering on microwave-treated carboxymethyl starch (CMS-Na), to detect universal boson peak (BP) behavior in glassy materials and fracton which is expected to universally appear in polymer glass. The obtained spectral shape of BP plot a(v)/v2of the CMS-Na-slu, where a(v) is the absorption coefficient, is different from either starch or vitreous glucose of the previous study. It suggests that existence of the fracton in the CMS-Na-slu.","PeriodicalId":6653,"journal":{"name":"2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)","volume":"13 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78274434","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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