Pub Date : 2002-12-16DOI: 10.1109/ICIMW.2002.1076070
A. Murk, N. Kampfer, R. Wydel, T. Manabe, M. Seta, J. Inatani
We present measurements of the beam patterns, bandpass characteristics and internal reflections of the input optics module for the submillimeter limb-sounder SMILES.
本文介绍了亚毫米肢体探测仪SMILES输入光学模块的光束模式、带通特性和内部反射的测量结果。
{"title":"Characterization of the ambient temperature optics of the submillimeter limb-sounder SMILES","authors":"A. Murk, N. Kampfer, R. Wydel, T. Manabe, M. Seta, J. Inatani","doi":"10.1109/ICIMW.2002.1076070","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076070","url":null,"abstract":"We present measurements of the beam patterns, bandpass characteristics and internal reflections of the input optics module for the submillimeter limb-sounder SMILES.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85821741","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076188
V. Kulish, O. Lysenko, I. V. Gubanov
The results of a project concerning compact two-stream superheterodyne free electron lasers (TSFEL), which can be constructed on the basis of MLIA-accelerators (multi-channel linear induction accelerators), are presented. A specific characteristic of the considered system is that the intensive relativistic electron beam source is constructed on the basis of a two-beam MLIA-accelerator. The design-scheme of the compact MLIA-accelerator is proposed and analyzed. It is shown that the main merit of the studied devices is their potential compactness.
{"title":"Concerning the project of a compact two-stream superheterodyne free electron laser","authors":"V. Kulish, O. Lysenko, I. V. Gubanov","doi":"10.1109/ICIMW.2002.1076188","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076188","url":null,"abstract":"The results of a project concerning compact two-stream superheterodyne free electron lasers (TSFEL), which can be constructed on the basis of MLIA-accelerators (multi-channel linear induction accelerators), are presented. A specific characteristic of the considered system is that the intensive relativistic electron beam source is constructed on the basis of a two-beam MLIA-accelerator. The design-scheme of the compact MLIA-accelerator is proposed and analyzed. It is shown that the main merit of the studied devices is their potential compactness.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73158574","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076181
A. R. Jha
This paper reveals critical design parameters of VLWIR HgCdTe photovoltaic (PV) detectors best suited for remote sensing and ballistic missile defense applications. Infrared sensors using photoconductive (PC) devices have limited performance capabilities. PV HgCdTe detectors offer much higher impedance and lower low frequency noise compared to PC detectors and do not require DC bias power. The compositional control and optimum detector architecture of VLWIR detectors are identified to achieve very large cutoff wavelength capability, most ideal for remote sensing and BMD applications.
{"title":"Very long wavelength infrared (VLWIR) Hg:Cd:Te photovoltaic detectors for remote sensing and ballistic missile defense applications","authors":"A. R. Jha","doi":"10.1109/ICIMW.2002.1076181","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076181","url":null,"abstract":"This paper reveals critical design parameters of VLWIR HgCdTe photovoltaic (PV) detectors best suited for remote sensing and ballistic missile defense applications. Infrared sensors using photoconductive (PC) devices have limited performance capabilities. PV HgCdTe detectors offer much higher impedance and lower low frequency noise compared to PC detectors and do not require DC bias power. The compositional control and optimum detector architecture of VLWIR detectors are identified to achieve very large cutoff wavelength capability, most ideal for remote sensing and BMD applications.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82590820","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076105
L. Ives, G. Miram, M. Mizuhara, D. Marsden, A. Krasnyhk, V. Ivanov
Multiple beam devices offer RF generation with increased efficiency and bandwidth at reduced operating voltage. Previous such devices primarily utilized Brillouin focused electron guns; however, these are limited to lower power operation. Development of confined flow multiple beam guns will allow generation of significantly higher RF power levels. Research on confined flow multiple beam guns producing 100 MW of electron beam power is presented.
{"title":"Multiple beam guns for high power RF applications","authors":"L. Ives, G. Miram, M. Mizuhara, D. Marsden, A. Krasnyhk, V. Ivanov","doi":"10.1109/ICIMW.2002.1076105","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076105","url":null,"abstract":"Multiple beam devices offer RF generation with increased efficiency and bandwidth at reduced operating voltage. Previous such devices primarily utilized Brillouin focused electron guns; however, these are limited to lower power operation. Development of confined flow multiple beam guns will allow generation of significantly higher RF power levels. Research on confined flow multiple beam guns producing 100 MW of electron beam power is presented.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75964330","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076054
V. Zapevalov, A. Bogdashov, A. Chirkov, G. Denisov, A. Kuftin, V. Lygin, M. A. Moiseev
The report presents results of investigation of the possibility to optimize numerically and experimentally the helical electron beam formation system, mode converter system and processes of mode interaction in the electron beam-cavity system for the prototype 105-170 GHz 1 MW step tunable gyrotron with different operating modes. The influence of ohmic load on the cavity, mode competition, electron beam potential depression and possibility of beam energy recovery is also investigated.
{"title":"Optimization of the frequency step tunable 105-170 GHz 1 MW gyrotron prototype","authors":"V. Zapevalov, A. Bogdashov, A. Chirkov, G. Denisov, A. Kuftin, V. Lygin, M. A. Moiseev","doi":"10.1109/ICIMW.2002.1076054","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076054","url":null,"abstract":"The report presents results of investigation of the possibility to optimize numerically and experimentally the helical electron beam formation system, mode converter system and processes of mode interaction in the electron beam-cavity system for the prototype 105-170 GHz 1 MW step tunable gyrotron with different operating modes. The influence of ohmic load on the cavity, mode competition, electron beam potential depression and possibility of beam energy recovery is also investigated.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76209048","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076079
L. Shenggang, Yan Yang, Zhu Da-jun
Wave propagation along a plasma waveguide is one of the most interesting and attractive topics in plasma physics and microwave plasma electronics. In the authors' previous paper (Liu Shenggang et al, Physical Rev. E, vol. 65, no. 3, pp. 036411-1-036411-8, 2002), a lot of interesting and important features in physics were revealed for wave propagation along waveguides filled with moving magnetized plasma (MMPW). A theoretical study on the non-reciprocal properties and the extreme relativistic cases are given in this paper. The numerical calculations show that in a MMPW there exists a non-reciprocal property, and it strongly depends upon the drift velocity of the plasma. As a consequence, the wave propagation in the opposite direction is quite different from that in the positive direction.
波沿等离子体波导的传播是等离子体物理学和微波等离子体电子学中最有趣和最有吸引力的课题之一。在作者先前的论文(刘生刚等，Physical Rev. E, vol. 65, no. 5)中。(3, pp. 036411-1-036411- 8,2002)，揭示了波沿移动磁化等离子体(MMPW)波导传播的许多有趣和重要的物理特征。本文对非互反性质和极端相对论性情况进行了理论研究。数值计算表明，在MMPW中存在非互反特性，且该特性与等离子体的漂移速度密切相关。因此，波在反方向上的传播与在正方向上的传播有很大的不同。
{"title":"The extreme cases and the non-reciprocal property of the wave propagation along a MMP waveguide","authors":"L. Shenggang, Yan Yang, Zhu Da-jun","doi":"10.1109/ICIMW.2002.1076079","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076079","url":null,"abstract":"Wave propagation along a plasma waveguide is one of the most interesting and attractive topics in plasma physics and microwave plasma electronics. In the authors' previous paper (Liu Shenggang et al, Physical Rev. E, vol. 65, no. 3, pp. 036411-1-036411-8, 2002), a lot of interesting and important features in physics were revealed for wave propagation along waveguides filled with moving magnetized plasma (MMPW). A theoretical study on the non-reciprocal properties and the extreme relativistic cases are given in this paper. The numerical calculations show that in a MMPW there exists a non-reciprocal property, and it strongly depends upon the drift velocity of the plasma. As a consequence, the wave propagation in the opposite direction is quite different from that in the positive direction.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87552877","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076095
G. K. Vlasov
The paper presents a new source of radiation with highest spatial coherency (SPLASER) using properties of spherical excitons to utilize multipole waves of cosmic origin in millimeter, visible and UV ranges. In particular, the appropriate combination of Splaser with a telescope gives essential rising of the angular resolution and information density in real time.
{"title":"Utilizing multipole waves energy of cosmic origin and rising resolution power","authors":"G. K. Vlasov","doi":"10.1109/ICIMW.2002.1076095","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076095","url":null,"abstract":"The paper presents a new source of radiation with highest spatial coherency (SPLASER) using properties of spherical excitons to utilize multipole waves of cosmic origin in millimeter, visible and UV ranges. In particular, the appropriate combination of Splaser with a telescope gives essential rising of the angular resolution and information density in real time.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86491780","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076150
M. Hornstein, V. Bajaj, R. Griffin, K. Kreischer, I. Mastovsky, M. Shapiro, R. Temkin
We report the design of a gyrotron oscillator for continuous operation at 460 GHz at a power level of up to 50 W. The gyrotron oscillator will be used in dynamic nuclear polarization (DNP) NMR (nuclear magnetic resonance) studies with a 700 MHz (/sup 1/H), 16.5 T NMR spectrometer and will operate at the second harmonic of the electron cyclotron frequency.
{"title":"Design of a 460 GHz second harmonic gyrotron oscillator for use in dynamic nuclear polarization","authors":"M. Hornstein, V. Bajaj, R. Griffin, K. Kreischer, I. Mastovsky, M. Shapiro, R. Temkin","doi":"10.1109/ICIMW.2002.1076150","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076150","url":null,"abstract":"We report the design of a gyrotron oscillator for continuous operation at 460 GHz at a power level of up to 50 W. The gyrotron oscillator will be used in dynamic nuclear polarization (DNP) NMR (nuclear magnetic resonance) studies with a 700 MHz (/sup 1/H), 16.5 T NMR spectrometer and will operate at the second harmonic of the electron cyclotron frequency.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86689083","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076212
T. Tran-Anh, S. Hansel, A. Kirste, H. Mueller, M. von Ortenberg
MBE-grown quantum dots of HgSe:Fe were investigated by infrared magnetotransmission using the single-turn-coil technique to generate megagauss fields. Due to the inhomogeneity of the dot size a broad absorption of the 10.6 /spl mu/m radiation is observed beyond the 2D cyclotron resonance at higher fields.
{"title":"The effect of quantum dots on the infrared cyclotron resonance in HgSe:Fe","authors":"T. Tran-Anh, S. Hansel, A. Kirste, H. Mueller, M. von Ortenberg","doi":"10.1109/ICIMW.2002.1076212","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076212","url":null,"abstract":"MBE-grown quantum dots of HgSe:Fe were investigated by infrared magnetotransmission using the single-turn-coil technique to generate megagauss fields. Due to the inhomogeneity of the dot size a broad absorption of the 10.6 /spl mu/m radiation is observed beyond the 2D cyclotron resonance at higher fields.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91536015","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 : 2002-12-16DOI: 10.1109/ICIMW.2002.1076134
Y. Gorelov, J. Lohr, P. Borchard, R. Callis, D. Ponce
Diamond disks made using the chemical vapor deposition (CVD) technique are now in common use as gyrotron output windows. The low millimeter wave losses and excellent thermal conductivity of diamond have made it possible to use such windows in gyrotrons with /spl sim/1 MW output power and pulse length up to and greater than 10 s. A ubiquitous characteristic of diamond gyrotron windows is the presence of apparent hot spots in the infrared images registered during RF pulses. Many of these spots are co-located with bright points seen in visible video images. The spots do not seem to compromise the integrity of the windows. Analysis of the infrared observations on several different gyrotrons operating at the DIII-D Tokamak are reported.
{"title":"Characteristics of diamond windows on the 1 MW, 110 GHz gyrotron systems on the DIII-D tokamak","authors":"Y. Gorelov, J. Lohr, P. Borchard, R. Callis, D. Ponce","doi":"10.1109/ICIMW.2002.1076134","DOIUrl":"https://doi.org/10.1109/ICIMW.2002.1076134","url":null,"abstract":"Diamond disks made using the chemical vapor deposition (CVD) technique are now in common use as gyrotron output windows. The low millimeter wave losses and excellent thermal conductivity of diamond have made it possible to use such windows in gyrotrons with /spl sim/1 MW output power and pulse length up to and greater than 10 s. A ubiquitous characteristic of diamond gyrotron windows is the presence of apparent hot spots in the infrared images registered during RF pulses. Many of these spots are co-located with bright points seen in visible video images. The spots do not seem to compromise the integrity of the windows. Analysis of the infrared observations on several different gyrotrons operating at the DIII-D Tokamak are reported.","PeriodicalId":23431,"journal":{"name":"Twenty Seventh International Conference on Infrared and Millimeter Waves","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79552677","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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