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1981 International Conference on Submillimeter Waves and Their Applications最新文献

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Heterodyne Spectroscopy with Tunable Laser Sidebands 具有可调谐激光边带的外差光谱
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335174
G. Magerl, W. Schupita, H. Kaeufl, H. Rothermel
{"title":"Heterodyne Spectroscopy with Tunable Laser Sidebands","authors":"G. Magerl, W. Schupita, H. Kaeufl, H. Rothermel","doi":"10.1109/ICSWA.1981.9335174","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335174","url":null,"abstract":"Tunable laser sidebands were successfully employed for the first time as a local oscillator in infrared heterodyne spectroscopy. By careful design of a resonant electrooptic modulator, sideband power in excess of 5 mW has been generated from 4W of CO2 laser power at a microwave drive power level of 10 W.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129051979","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
The NonLinear Theory of the Free Electron Laser 自由电子激光的非线性理论
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335206
Cha-Mei Tang, P. Sprangle
{"title":"The NonLinear Theory of the Free Electron Laser","authors":"Cha-Mei Tang, P. Sprangle","doi":"10.1109/ICSWA.1981.9335206","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335206","url":null,"abstract":"The free electron laser (FEL) is a new radiation source characterized by frequency tunability, high power levels, high efficiencies and output wavelengths ranging from the millimeter to beyond the optical regime. The schematic of the FEL configuration consists of a stream of relativistic electrons propagating through a spatially periodic wiggler field as depicted in Fig. 1. Under appropriate conditions, an electromagnetic wave double doppler upshifted in frequency can be amplified.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126035575","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
Quasi-Optical Ring Resonator Diplexf.rs: Theory and Experiment 准光环形谐振器双工。rs:理论与实验
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335171
A. Chiou, H. Pickett
{"title":"Quasi-Optical Ring Resonator Diplexf.rs: Theory and Experiment","authors":"A. Chiou, H. Pickett","doi":"10.1109/ICSWA.1981.9335171","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335171","url":null,"abstract":"Performance of quasi-optical ring resonator diplexers with plane parallel plate resonator, cylindrical resonator and toroidal resonator mirrors are investigated both theoretically and experimentally. Experimental models have been constructed and tested at 100 GHz. Our results indicate that for diffraction limited cases significant improvement in performance of diplexer may be achieved by utilizing a toroidal reflector properly designed to phase-match the input Gaussian beam from local oscillator.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116254586","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
Compact Cyclotron Resonance Maser 紧凑型回旋共振脉泽器
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335152
A. Kupiszewski, N. Luhmann, H. Jory
{"title":"Compact Cyclotron Resonance Maser","authors":"A. Kupiszewski, N. Luhmann, H. Jory","doi":"10.1109/ICSWA.1981.9335152","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335152","url":null,"abstract":"There is presently considerable interest in the development of rf sources in the millimeter and submillimeter wave frequency region. The proposed application areas include military radar and communications systems, radio astronomy, atmospheric radiometry, nondestructive dielectric testing, detection systems for concealed weapons, fusion plasma heating, and plasma diagnostics. Specific proposed military applications include high resolution radar for target identification, phased array radar configurations, electronic counter-measures and possible covert communications. Reasonable power is necessary because the attenuation at high frequencies is an important factor that limits the range at which objects can be imaged. Airborne applications in addition require that the source be extremely compact (i.e. small size and light weight). These two somewhat contradictory requirements place extreme burdens on the source design. For example, the high voltage or high magnetic fields associated with conventional microwave tubes operating at such high frequencies are not satisfactory. The purpose of the present work is therefore to develop a compact, relatively high power (> 100 W) rf source in the 90-1000 GHz region which does not suffer from these limitations.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"386 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122841489","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
Conversion Efficiency and Noise Measurements of SIS Array Mixers SIS阵列混频器的转换效率和噪声测量
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335104
H. van Kempen, W. R. McGrath, P. Richards, A. D. Smith, R. E. Harris, F. Lloyd
{"title":"Conversion Efficiency and Noise Measurements of SIS Array Mixers","authors":"H. van Kempen, W. R. McGrath, P. Richards, A. D. Smith, R. E. Harris, F. Lloyd","doi":"10.1109/ICSWA.1981.9335104","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335104","url":null,"abstract":"Quasiparticle heterodyne mixers which use series arrays [1] of Pb-alloy SIS tunnel junctions have been tested at 36 GHz. These arrays each showed a conversion loss of approximately 5dB. Single-sideband noise temperatures of 9.8 ± 5K, 34 ± 12 K, and 85 ± 25 K were measured for 1, 10 and 50 junction arrays respectively. Significantly increased saturation levels were observed for the 10 and 50 junction arrays.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133300507","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
Cyclotron Maser Instability as a Resonant Limit of a Space Charge Wave 回旋脉泽不稳定性作为空间电荷波的共振极限
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335149
Y. Lau, M. Baird, L. Barnett, K. Chu, V. Granatstein
{"title":"Cyclotron Maser Instability as a Resonant Limit of a Space Charge Wave","authors":"Y. Lau, M. Baird, L. Barnett, K. Chu, V. Granatstein","doi":"10.1109/ICSWA.1981.9335149","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335149","url":null,"abstract":"In place of a treatment in phase space, we present in this paper a macroscopic, fluid-like, description of cyclotron maser instabilities in a simple geometrical configuration. The approach follows that commonly used in conventional microwave devices. The usual dispersion relationship for cyclotron maser instability is recovered by considering the synchronous interaction between the space charges on the relativistic beam with the surrounding electromagnetic structure. The charge bunching processes are described. This analysis is also valid for nonsynchronous interactions.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134519981","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
A New Method of Phonon Detection using Time-Resolved Far-Infrared Laser Spectroscopy 一种时间分辨远红外激光光谱声子探测新方法
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335173
H. Lengfellner, K. Renk
{"title":"A New Method of Phonon Detection using Time-Resolved Far-Infrared Laser Spectroscopy","authors":"H. Lengfellner, K. Renk","doi":"10.1109/ICSWA.1981.9335173","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335173","url":null,"abstract":"A new method of high-frequency phonon detection is reported. By time-resolved far-infrared spectroscopy, transverse acoustic zone-boundary phonons in TlCl and TlBr crystals are observed and the decay of these phonons at temperatures from 3 K to 20 K is investigated.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124758211","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
Measurement of the Dielectric Constant and Loss Tangent of Thallium Mixed Halide Crystals KRS-5 and KRS-6 at 95GHz KRS-5和KRS-6混合卤化铊晶体介电常数和损耗正切线在95GHz的测量
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335189
W. Bridges, M. Klein, E. Schweig
{"title":"Measurement of the Dielectric Constant and Loss Tangent of Thallium Mixed Halide Crystals KRS-5 and KRS-6 at 95GHz","authors":"W. Bridges, M. Klein, E. Schweig","doi":"10.1109/ICSWA.1981.9335189","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335189","url":null,"abstract":"We report mesurements of the dielectric constant and loss tangent of KRS-5 and KRS-6 at 95GHz. We describe the sample preparation and the waveguide techniques used, and compare our results with values available in the literature (at other frequencies) and a simple theoretical model.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122885296","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
High Power, 140 GHz Gyrotron 高功率，140 GHz回旋加速器
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335177
K. Kreischer, R. Temkin, W. Mulligan, S. MacCabe
{"title":"High Power, 140 GHz Gyrotron","authors":"K. Kreischer, R. Temkin, W. Mulligan, S. MacCabe","doi":"10.1109/ICSWA.1981.9335177","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335177","url":null,"abstract":"The design and construction of a pulsed 100 kW, 140 GHz gyrotron will be described. Initial gyrotron operation is expected in late 1981 or early 1982. Advances in gyrotron theory carried out in support of this experimental research will also be described.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123999116","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
Far-IR Observations of Active Regions at Sunspots with a Balloon-Borne 60 cm Telescope 用气球载60厘米望远镜对太阳黑子活跃区域的远红外观测
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335154
F. Cartier, F. Kneubühl, D. Huguenin, E. Müller
{"title":"Far-IR Observations of Active Regions at Sunspots with a Balloon-Borne 60 cm Telescope","authors":"F. Cartier, F. Kneubühl, D. Huguenin, E. Müller","doi":"10.1109/ICSWA.1981.9335154","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335154","url":null,"abstract":"Far-infrared continuum observations of the sun provide a straightforward method of measuring the temperature of various levels of the transition region between photosphere and chromosphere which is characterized by a temperature minimum. These observations allow the determination of the spectral brightness temperature averaged over the disk as well as structure and variability of the solar atmosphere: center-to-limb variation, solar maps, active regions around sunspots, plages, solar oscillations and flares. Observations of the solar emission spectrum at wavelengths between 10 μm and 1000 μm up to 1975/1976 were reviewed by Mankin |1|.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129569111","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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