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A radiation source for both the visible and the infrared 可见光和红外线的辐射源
Infrared physics Pub Date : 1993-04-01 DOI: 10.1016/0020-0891(93)90006-S
M.A. Havstad , D.L. Brown , J.D. Maltby , J.L. Ebert , S.A. Self
{"title":"A radiation source for both the visible and the infrared","authors":"M.A. Havstad ,&nbsp;D.L. Brown ,&nbsp;J.D. Maltby ,&nbsp;J.L. Ebert ,&nbsp;S.A. Self","doi":"10.1016/0020-0891(93)90006-S","DOIUrl":"10.1016/0020-0891(93)90006-S","url":null,"abstract":"<div><p>A radiation source with high output in both the visible and infrared spectral ranges has been developed, and its operating parameters are described. The hot element, a carbon composite board, is simple to fabricate as well as to operate. The source has been compared to both a tungsten strip lamp and a Nernst glower. For applications where both the visible and infrared ranges are of interest, this source allows for simplified experimental design.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 2","pages":"Pages 169-174"},"PeriodicalIF":0.0,"publicationDate":"1993-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90006-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081295","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
Temperature and concentration dependence af energy gap and refrective index in certain mixed crystals and semiconductors 某些混合晶体和半导体中能隙和反射率的温度和浓度依赖性
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90041-5
R.R. Reddy, M.Ravi Kumar, T.V.R. Rao
{"title":"Temperature and concentration dependence af energy gap and refrective index in certain mixed crystals and semiconductors","authors":"R.R. Reddy,&nbsp;M.Ravi Kumar,&nbsp;T.V.R. Rao","doi":"10.1016/0020-0891(93)90041-5","DOIUrl":"10.1016/0020-0891(93)90041-5","url":null,"abstract":"<div><p>Variations of energy gap (<em>E</em><sub>g</sub>) and refractive index (<em>n</em>) with the concentration have been studied through a set of simple empirical equations proposed in the case of certain mixed crystals of technological importance. Similarly, another set of equations has been proposed to explain the temperature dependence of the energy gap in semiconductors such as GaS, GaSe, GaTe, SnS<sub>2</sub> and SnSe<sub>2</sub>. The results obtained in both cases are found to be in excellent agreement with the experimental values. The proposed equations are proved to be simple and advantageous over others in the sense that less computational work is involved in the calculations of <em>E</em><sub>g</sub> and <em>n</em>.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 103-107"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90041-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081740","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: 14
Long wavelength (sub-mm) telescope simulator 长波长(亚毫米)望远镜模拟器
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90026-4
W.D. Duncan , T.J. Norton , D.J. Robertson , J.M.D. Strachan , J.E. Harris , C.R. Cunningham , P.A.R. Ade , W.S. Holland
{"title":"Long wavelength (sub-mm) telescope simulator","authors":"W.D. Duncan ,&nbsp;T.J. Norton ,&nbsp;D.J. Robertson ,&nbsp;J.M.D. Strachan ,&nbsp;J.E. Harris ,&nbsp;C.R. Cunningham ,&nbsp;P.A.R. Ade ,&nbsp;W.S. Holland","doi":"10.1016/0020-0891(93)90026-4","DOIUrl":"10.1016/0020-0891(93)90026-4","url":null,"abstract":"<div><p>An automated long wavelength (submillimetre) telescope simulator is described which produces a diffraction limited image in the simulator focal plane for laboratory measurement of the matching of receivers of photometers to the telescope being simulated.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 1-15"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90026-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081538","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
Studies on the opto-electronic properties of alkali halides from optical electronegativities 从光电负性研究碱卤化物的光电性质
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90039-A
R.R. Reddy, M.Ravi Kumar, T.V.R. Rao
{"title":"Studies on the opto-electronic properties of alkali halides from optical electronegativities","authors":"R.R. Reddy,&nbsp;M.Ravi Kumar,&nbsp;T.V.R. Rao","doi":"10.1016/0020-0891(93)90039-A","DOIUrl":"10.1016/0020-0891(93)90039-A","url":null,"abstract":"<div><p>A simple method of evaluating refractive indices from Duffy's optical electronegativity values is proposed. In the proposed empirical relations the optical electronegativity for the anion as well as the cation are taken into consideration in order to obtain refractive indices in alkali halides. The refractive indices so obtained are used in the evaluation of electronic polarizabilities in these compounds and the results are found to be in good agreement with the standard values.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 95-97"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90039-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081714","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: 12
A discrete modulation transfer function for focal plane arrays 焦平面阵列的离散调制传递函数
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90042-6
A.H. Lettington, Q.H. Hong
{"title":"A discrete modulation transfer function for focal plane arrays","authors":"A.H. Lettington,&nbsp;Q.H. Hong","doi":"10.1016/0020-0891(93)90042-6","DOIUrl":"10.1016/0020-0891(93)90042-6","url":null,"abstract":"<div><p>A mathematical method has been developed to characterize discrete devices such as focal plane arrays. It is shown that by using discrete Fourier transform techniques, the previous non-isoplanatic (space variant) problem may be avoided and the analysis of aliasing made easier.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 109-114"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90042-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081747","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: 22
Specular reflectance of silicon and germanium at variable angles of incidence in the infrared region 变入射角下硅和锗在红外区的镜面反射率
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90033-4
D. Gupta, S.P. Varma
{"title":"Specular reflectance of silicon and germanium at variable angles of incidence in the infrared region","authors":"D. Gupta,&nbsp;S.P. Varma","doi":"10.1016/0020-0891(93)90033-4","DOIUrl":"10.1016/0020-0891(93)90033-4","url":null,"abstract":"<div><p>The results of systematic measurements of specular reflectances of both single as well as double surface polished silicon and germanium at glancing angles of incidence from 10° to 70° in the infrared (IR) region of 2.5–25 μm have been discussed. The experimental results have been explained by comparison with the theoretical reflectance data obtained using Fresnel's theory.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 55-60"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90033-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081638","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
Stimulated emission of atmospheric water vapour between 2 cm−1 and 30 cm−1 photoinduced by infrared radiation 在2 cm−1和30 cm−1之间由红外辐射光诱导的大气水蒸气受激发射
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90028-6
P.F. Miller, H.A. Gebbie
{"title":"Stimulated emission of atmospheric water vapour between 2 cm−1 and 30 cm−1 photoinduced by infrared radiation","authors":"P.F. Miller,&nbsp;H.A. Gebbie","doi":"10.1016/0020-0891(93)90028-6","DOIUrl":"10.1016/0020-0891(93)90028-6","url":null,"abstract":"<div><p>Fourier spectra of humid air in a 0.8 m path when it was illuminated by a combined flux of millimetre waves, infrared and ultraviolet showed millimetre wave maser action pumped by the infrared component.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 23-31"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90028-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081570","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
Forthcoming conferences 即将到来的会议
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90043-7
{"title":"Forthcoming conferences","authors":"","doi":"10.1016/0020-0891(93)90043-7","DOIUrl":"https://doi.org/10.1016/0020-0891(93)90043-7","url":null,"abstract":"","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Page 115"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90043-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90128234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Selectivity improvement of air pollution detection by using optothermal laser spectroscopy 光热激光光谱法提高空气污染检测的选择性
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90027-5
L.S. Vasilenko, A.A. Kovalyov, N.N. Rubtsova
{"title":"Selectivity improvement of air pollution detection by using optothermal laser spectroscopy","authors":"L.S. Vasilenko,&nbsp;A.A. Kovalyov,&nbsp;N.N. Rubtsova","doi":"10.1016/0020-0891(93)90027-5","DOIUrl":"10.1016/0020-0891(93)90027-5","url":null,"abstract":"<div><p>Optothermal CO<sub>2</sub> laser spectroscopy of air polluted by CO<sub>2</sub> and SO<sub>2</sub> has been performed with improved selectivity in the low pressure range. The ability of kinetic cooling effects to give additional improvement of the detection selectivity is demonstrated.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 17-22"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90027-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081550","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 method for determining the yield of indium bump contacts for integration in hybrid focal plane arrays at room temperature 一种在室温下测定混合焦平面阵列中集成铟凹凸触点产率的方法
Infrared physics Pub Date : 1993-02-01 DOI: 10.1016/0020-0891(93)90031-2
R.K. Bhan, S.K. Lomash, K.C. Chhabra
{"title":"A method for determining the yield of indium bump contacts for integration in hybrid focal plane arrays at room temperature","authors":"R.K. Bhan,&nbsp;S.K. Lomash,&nbsp;K.C. Chhabra","doi":"10.1016/0020-0891(93)90031-2","DOIUrl":"10.1016/0020-0891(93)90031-2","url":null,"abstract":"<div><p>A simple electrical method for determining the yield of indium bump integration between the infrared photosensing chip and the silicon readout chip in hybrid focal plane arrays (FPAs) is proposed. In our case, the IR photosensing chip consists of a 16 × 16 HgCdTe (MCT) photovoltaic (PV) array and the readout chip is a 16 × 16 silicon-CCD multiplexer (MUX). However, the method can be used for even larger array sizes. The method allows one to determine the yield of integration at room temperature. In addition, it does not necessitate the vacuum sealing of hybrid FPA in the dewar and subsequent testing at 77 K for determining this yield. The proposed method essentially verifies the electrical connectivity between the MCT PV diodes and their corresponding input diffusions in the CCD MUX on pixel-to-pixel basis. A simple examination of the readout of the whole array on the oscilloscope at room temperature, initiated at the detector and through CCD MUX is used for determining exactly how many MCT PV diodes have been joined successfully to their corresponding CCD MUX pixels after indium bump integration.</p></div>","PeriodicalId":81524,"journal":{"name":"Infrared physics","volume":"34 1","pages":"Pages 43-48"},"PeriodicalIF":0.0,"publicationDate":"1993-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-0891(93)90031-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53081618","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
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