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

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New Ideas for Efficient Generation of Coherent Near-Millimeter Wave Radiation 高效产生相干近毫米波辐射的新思路
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335078
J. Thomas, R. Dasari, M. Feld
{"title":"New Ideas for Efficient Generation of Coherent Near-Millimeter Wave Radiation","authors":"J. Thomas, R. Dasari, M. Feld","doi":"10.1109/ICSWA.1981.9335078","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335078","url":null,"abstract":"Production of efficient sources of coherent near millimeter wave (NMMW) radiation is an important unsolved prohlem. In the most efficient devices at present, optically pumped lasers and gas-discharge systems such as the HCN laser, excitation supplied at energy hslash omega ∼ leV produces NMMW photons of energy hslash omega ∼ 1−2 ev, the remainder of the excitation energy being trapped in the molecule. This leads to an intrinsic reduction ξ o = Omega/ omega ∼ 10−2 in power conversion efficiency, since in these systems, each excitation quantum yields at best one NMMW photon.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"25 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":"125632526","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
Millimeter Wave Amplification in the Negative Glow 负辉光中的毫米波放大
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335218
A. Palmer
{"title":"Millimeter Wave Amplification in the Negative Glow","authors":"A. Palmer","doi":"10.1109/ICSWA.1981.9335218","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335218","url":null,"abstract":"Gain measurements, resonator experiments, and theoretical modeling of the amplification of millimeter-wave radiation in the cathode-region plasma of a cold-cathode discharge are reported.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"24 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":"129292561","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 Comparative Study of Millimeter-Wave Transmission Lines 毫米波传输线的比较研究
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335164
T. Itoh, J. Rivera
{"title":"A Comparative Study of Millimeter-Wave Transmission Lines","authors":"T. Itoh, J. Rivera","doi":"10.1109/ICSWA.1981.9335164","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335164","url":null,"abstract":"The state of the art in areas such as material science, solid state devices, and photo-lithography has progressed rapidly and has created a need for innovative and efficient guiding methods of electromagnetic energy. With recent advances in millimeter-wave technology, various transmission lines have been introduced that can be quite useful in the upper frequency bands. By combining classical theory and numerical methods, it is possible to predict the characteristics of these structures and develop a reliable network design that utilizes them. The most common transmission lines may be grouped into four categories: Dielectric waveguides, Semi-open structures, Non-TEM lines, and Quasi-TEM lines. Extensive work has been performed on all of these so reference data is not difficult to obtain.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"46 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":"129840894","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: 7
Coupling Losses in Waveguide Lasers Containing a Diffraction Grating 含衍射光栅波导激光器的耦合损耗
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335195
A. Holohan, S. Prunty, M. C. Sexton
{"title":"Coupling Losses in Waveguide Lasers Containing a Diffraction Grating","authors":"A. Holohan, S. Prunty, M. C. Sexton","doi":"10.1109/ICSWA.1981.9335195","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335195","url":null,"abstract":"This paper treats the coupling losses which arise in waveguide CO2 lasers when one element of the resonator is a diffraction grating. Line hopping, frequently observed in waveguide lasers, due to the small number of grating facets illuminated, is investi gated.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"37 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":"117246043","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
An Ultra Low-Noise Schottky Mixer Receiver at 80–120 GHz 80-120 GHz超低噪声肖特基混频器接收机
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335162
V. A. Räisänen, N. Erickson, J. Marrero, P. Goldsmith, C. R. Predmore
{"title":"An Ultra Low-Noise Schottky Mixer Receiver at 80–120 GHz","authors":"V. A. Räisänen, N. Erickson, J. Marrero, P. Goldsmith, C. R. Predmore","doi":"10.1109/ICSWA.1981.9335162","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335162","url":null,"abstract":"An ultra low-noise mixer receiver has been developed at the Five College Radio Astronomy Observatory for astronomical observations from 80 to 120 GHz with the 13.7 m diameter millimeter telescope. The cryogenic front end consists of a feed horn, a ring filter and a waveguide mixer followed by a 1.4 GHz FET amplifier. The optimization of the mixer RF-impedance at 100 GHz has yielded single sideband (SSB) receiver noise temperatures of 1 24 K and 588 K at physical temperatures of 18 K and 295 K, respectively.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"200 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":"124389521","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: 2
Far-Infrared Two-Photon Transitions in n-GaAs n-GaAs中的远红外双光子跃迁
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335172
W. Böhm, E. Ettlinger, W. Prettl
{"title":"Far-Infrared Two-Photon Transitions in n-GaAs","authors":"W. Böhm, E. Ettlinger, W. Prettl","doi":"10.1109/ICSWA.1981.9335172","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335172","url":null,"abstract":"Two-photon transitions in the far-infrared spectral range have been observed for the first time. The photoconductivity of n-GaAs as a function of the applied magnetic field exhibited two-photon transitions between 1s and 2s shallow donor states and two-photon cyclotron resonance. The experimental results indicate that two-photon cyclotron resonance is caused by impurities.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"456 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":"115731691","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
Intracavity Pumped FIR NH3 Laser by te CO2 Laser CO2激光器腔内泵浦FIR NH3激光器
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335194
H. Hirose, H. Matsuda, S. Kon
{"title":"Intracavity Pumped FIR NH3 Laser by te CO2 Laser","authors":"H. Hirose, H. Matsuda, S. Kon","doi":"10.1109/ICSWA.1981.9335194","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335194","url":null,"abstract":"A compact FIR laser cavity having a couple of folding mirrors was designed. By inserting this FIR cavity into the pump TE CO2 laser resonator, we observed 19 FIR NH3 laser lines. The maximum output power was over 100 W at 150 μm and 90 μm lines.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"76 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":"128756993","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
Phase Error Correction in the FTS of Spectra with Positive and Negative Intensities 正、负强度光谱傅立叶变换的相位误差校正
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335089
B. Carli, F. Mencaraglia, F. Forni
{"title":"Phase Error Correction in the FTS of Spectra with Positive and Negative Intensities","authors":"B. Carli, F. Mencaraglia, F. Forni","doi":"10.1109/ICSWA.1981.9335089","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335089","url":null,"abstract":"The limits of standard techniques of phase error correction in the case of interferograms produced by a source with positive and negative intensities are considered. A solution and some practical examples are presented.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"39 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":"131416247","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
225 GHz Radar System 225 GHz雷达系统
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335201
C. W. Trussell, R. McMillan, R. E. Forsythe, R. Bohlander
{"title":"225 GHz Radar System","authors":"C. W. Trussell, R. McMillan, R. E. Forsythe, R. Bohlander","doi":"10.1109/ICSWA.1981.9335201","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335201","url":null,"abstract":"A 225 GHz Radar Transceiver developed at Georgia Tech will be described and preliminary test results will be presented. The system was designed for coherent operation and features an extended interaction oscillator transmitter, a subharmonically pumped (f/4) receiver, and a quasi-optical duplexer.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"8 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":"114192146","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
Crystal Quartz Etalons for FIR Laser Interferometer 用于FIR激光干涉仪的晶体石英标准子
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335100
A. Nishizawa, J. Fujita, M. Yamanaka, S. Okajima, S. Makino, M. Kondo, S. Nakata, S. Kon, A. Nagashima, Y. Tsunawaki
{"title":"Crystal Quartz Etalons for FIR Laser Interferometer","authors":"A. Nishizawa, J. Fujita, M. Yamanaka, S. Okajima, S. Makino, M. Kondo, S. Nakata, S. Kon, A. Nagashima, Y. Tsunawaki","doi":"10.1109/ICSWA.1981.9335100","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335100","url":null,"abstract":"Crystal quartz etalons are designed for the beam splitter and the window of a 118.8-μm CH3OH laser interferometer. Measured transmissivities of these etalons agree with estimated values within ± 2%. The measured refractive index and absorption coefficient derived from the transmissivity measurements for the extraordinary ray at 118.834 μm are 2.1695 ± 0.0004 and 0.50 ± 0.09 cm−1, respectively.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"13 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":"116031848","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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