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1983 Eighth International Conference on Infrared and Millimeter Waves最新文献

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The Orbitron Maser 轨道微波激射器
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126529
I. Alexeff, F. Dyer
{"title":"The Orbitron Maser","authors":"I. Alexeff, F. Dyer","doi":"10.1109/irmm.1983.9126529","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126529","url":null,"abstract":"The Orbitron Maser uses synthetic atoms in which free electrons orbit positively-charged metallic nuclei. These orbiting electrons interact with the radiation field of a microwave cavity to produce stimulated microwave emission. The difference between our device and ordinary microwave tubes and conventional masers is that it can operate in the difficult range between one centimeter and 0.1 millimeter.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128358069","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
Tunable gyrotrons 可调振动陀螺仪
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126461
G. Brand
{"title":"Tunable gyrotrons","authors":"G. Brand","doi":"10.1109/irmm.1983.9126461","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126461","url":null,"abstract":"At the present time the development of gyrotrons and related devices is being stimulated by the demand for high-power microwaves to heat tokamak plasmas to fusion temperatures and for new radar applications. The development of low-power gyrotrons and their applications has largely been ignored. At Sydney University we are developing such low-power devices for spectroscopy and plasma scattering.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129986153","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: 18
Characterization of a dual-mode horn for submillimeter wavelengths 亚毫米波双模喇叭的特性
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126536
H. Pickett, J. Hardy, J. Farhoomand
{"title":"Characterization of a dual-mode horn for submillimeter wavelengths","authors":"H. Pickett, J. Hardy, J. Farhoomand","doi":"10.1109/irmm.1983.9126536","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126536","url":null,"abstract":"A simple dual-mode conical horn has been developed and tested at 0.5 mm, 1.4 mm, 3.1 mm, and 34.2 mm. The horn has nearly equal beam shape in the E and H plane far field patterns with a 3dB half angle of 6°. At 34.2 mm the waveguide reflection loss and the phase center have been determined.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120955456","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: 23
Wide-bandwidth HgCdTe photodiode photomixers at 28 μm 28 μm的宽带HgCdTe光电二极管
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/IRMM.1983.9126409
D. Spears
{"title":"Wide-bandwidth HgCdTe photodiode photomixers at 28 μm","authors":"D. Spears","doi":"10.1109/IRMM.1983.9126409","DOIUrl":"https://doi.org/10.1109/IRMM.1983.9126409","url":null,"abstract":"Long-wavelength HgCdTe photodiodes operating at 20 K have been developed with quantum efficiencies >40%, bandwidths >500 MHz and a calculated heterodyne NEP = 6 × 10−20 W/Hz for a local oscillator power of 100 μW at 28 μm. A theoretical analysis along with wavelength response, pulse response and noise data are described.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121273502","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
Radiometric investigation of millimeter wave emissions of surface foam 泡沫表面毫米波发射的辐射学研究
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126391
W. Gregorwich, H. Musal, C. Naar
{"title":"Radiometric investigation of millimeter wave emissions of surface foam","authors":"W. Gregorwich, H. Musal, C. Naar","doi":"10.1109/irmm.1983.9126391","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126391","url":null,"abstract":"A novel experimental technique employing artificial bubbles was used to investigate the emissivity of surface foam at 35 GHz. Improvement over previous research was achieved oy focusing the sensing antenna in the Rayleigh region and utilizing controlled bubbles. Experimental data show close agreement with the analytical bubble model.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122489399","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
Operation of a high-hartonic gyrotron 高频率回旋管的操作
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126500
D. Mcdermott, N. Luhmann, D. S. Furuno
{"title":"Operation of a high-hartonic gyrotron","authors":"D. Mcdermott, N. Luhmann, D. S. Furuno","doi":"10.1109/irmm.1983.9126500","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126500","url":null,"abstract":"The operation of a millimeter-wave harmonic gyrotron is described in which the interaction is between axis-encircling electrons and cylindrical cavity TEnll modes. Gyrotron cavities operating on this principle are well matched to low current, moderate energy, rfaccelerated electron beams. Efficiencies up to 15% have been measured for moderate harmonic interactions, multi-kW power levels have been attained at the eleventh harmonic of the cyclotron frequency, and 65 GHz waves have been produced. The concept allows the magnetic field of the gyrotron to be reduced by an order of magnitude, thereby making a submillimeter-wave gyrotron feasible. However, mode competition problems must be considered for high-harmonic, sub-millimeter wave operation, We have been successful in suppressing mode competition by destroying unwanted modes.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116227540","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
Current oscillations in p-i-n diodes at interband photoexcitation 带间光激发下p-i-n二极管的电流振荡
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126430
V. Gruzinskis, J. Požela, A. Reklaitis
{"title":"Current oscillations in p-i-n diodes at interband photoexcitation","authors":"V. Gruzinskis, J. Požela, A. Reklaitis","doi":"10.1109/irmm.1983.9126430","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126430","url":null,"abstract":"The dynamics of photoexcited electron-hole plasma in p-i-n diodes under steady applied voltage and photogeneration is investigated by the Monte Carlo particle simulation. The current oscillations with the frequency of the order of 1011 – 1012 Hz at the ballistic transport conditions are obtained.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126693173","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
Optimum design of millimeter-wave impatt diode oscillators 毫米波入射二极管振荡器的优化设计
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/IRMM.1983.9126371
Yatsun Hwang
{"title":"Optimum design of millimeter-wave impatt diode oscillators","authors":"Yatsun Hwang","doi":"10.1109/IRMM.1983.9126371","DOIUrl":"https://doi.org/10.1109/IRMM.1983.9126371","url":null,"abstract":"An oscillator model used to investigate the dynamic behaviors of millimeter-wave pulsed and CW oscillators was developed. The effect of external influences on device behavior and oscillator performance techniques to control the post turn-on frequency drift were described.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125710186","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
Modification of microturbulence during impurity injection on text 文本杂质注入过程中微湍流的修正
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126399
D. Brower, W. Peebles, N. Luhmann, P. Phillips, W. Rowan
{"title":"Modification of microturbulence during impurity injection on text","authors":"D. Brower, W. Peebles, N. Luhmann, P. Phillips, W. Rowan","doi":"10.1109/irmm.1983.9126399","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126399","url":null,"abstract":"A multichannel, far-infrared (FIR) laser scattering system is used to study the temporal development of the power spectra of low frequency microturbulence in the TEXT tokamak. The single shot measurement capability has revealed significant modifications in the spectra during laser ablative injection of small quantities of scandium into the plasma. The present paper reports these observations in detail and discusses their relevance to transport phenomena in fusion plasmas.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125463688","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
Nonlinear MM wave generation in a planar structure containing semiconductor 含半导体平面结构中非线性毫米波的产生
1983 Eighth International Conference on Infrared and Millimeter Waves Pub Date : 1983-12-01 DOI: 10.1109/irmm.1983.9126498
W. Hwang, D. Bolle
{"title":"Nonlinear MM wave generation in a planar structure containing semiconductor","authors":"W. Hwang, D. Bolle","doi":"10.1109/irmm.1983.9126498","DOIUrl":"https://doi.org/10.1109/irmm.1983.9126498","url":null,"abstract":"In this paper we examine the problem of EM wave generation using nonlinear mixing schemes. The structure to be analyzed is shown in Fig. 1. It consists of layers of differing dielectrics, some of which may be doped or undoped GaAs materials. It is symmetric about the center plane and is infinite and uniform in the direction transverse to the normal ○ and the direction of propagation z. In the center is a thin layer of single crystal GaAs material which exhibits optical nonlinearity. The nonlinearity consists of the contributions from both the valence electrons of the intrinsic GaAs material and the conduction electrons introduced into the medium by external means. Two optical waves propagating inside the center layer induce, as a result of optical mixing, a distribution of electric dipoles which radiate EM waves at the sum, difference or harmonic frequencies of the input waves. We are particularly interested in the generation of waves at the difference frequency which, for two CO2 laser inputs, ranges from ∼150–4000 GHz. The dispersion characteristic and field distribution of the excited waves are determined by the waveguiding property of the whole structure at that frequency.","PeriodicalId":314918,"journal":{"name":"1983 Eighth International Conference on Infrared and Millimeter Waves","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127030473","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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