红外与毫米波学报最新文献_第9页

Fabrication and application of high aspect ratio metallic gratings for sensing in the mid-infrared region 中红外区域传感用高纵横比金属光栅的制作与应用

IF 0.7 4区物理与天体物理

红外与毫米波学报 Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1010.2013.00154

Z. Gai

{"title":"Fabrication and application of high aspect ratio metallic gratings for sensing in the mid-infrared region","authors":"Z. Gai","doi":"10.3724/sp.j.1010.2013.00154","DOIUrl":"https://doi.org/10.3724/sp.j.1010.2013.00154","url":null,"abstract":"A method for fabricating high aspect ratio(HAR) metallic gratings using nanoimprint together with sputtering and reactive-ion etching(RIE) was introduced.The reflection spectrum is measured by Fourier transform infrared(FTIR) spectrometer in the mid-infrared(Mid-IR) region.The reflection peaks will appear just when the p-polarized light incident normally to the grating vector direction,which is very similar to the phenomenon of surface plasmon resonance.This is the so-called spoof surface plasmon resonance(SSPR).Theoretical analysis based on rigorous coupled wave showed that spoof surface plasmon resonance is very sensitive to the change of refractive index in the surface of the metal.Thus this phenomenon has its potential use as a refractive index sensor.In addition,the shift of resonance wavelength with the refractive index of the metal surface is completely linear.The refractive index sensitivity of the Mid-IR SPR sensor are predicted to be 1600 nm per refractive index unit(1600 nm/RIU) and 5000 nm/RIU for the positive and negative order diffractive waves,respectively.The corresponding figure of merits of the whole system is predicted to be 20 RIU-1 and 60 RIU-1,respectively.The list of applicable target materials will certainly expand greatly if mid-IR SPR-based sensors are developed.","PeriodicalId":50181,"journal":{"name":"红外与毫米波学报","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69888707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Extraction of refractive indices of materials through transmission terahertz time-domain spectroscopy 透射太赫兹时域光谱法提取材料折射率

IF 0.7 4区物理与天体物理

红外与毫米波学报 Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1010.2013.00160

Chen Li

{"title":"Extraction of refractive indices of materials through transmission terahertz time-domain spectroscopy","authors":"Chen Li","doi":"10.3724/sp.j.1010.2013.00160","DOIUrl":"https://doi.org/10.3724/sp.j.1010.2013.00160","url":null,"abstract":"For samples with distinguishable echoes in detected transmission pulses,we mainly use the phase difference between the detected pulses to extract their refraction indices by transmission terahertz time-domain spectroscopy.Specifically,there are two methods.The first one requires the reference pulse and the first terahertz pulse transmitted through the sample;the second one requires the terahertz pulse transmitted through the sample and the second transmitted pulse after two reflections in the sample.However,in practice,there exists an angle between the incident terahertz beam and the surface normal of the sample.Yet,this angle is not easy to measure.So,in calculation we usually ignore this angle,which often causes error in the extracted refractive indices.In addition,this error is related with the selected method.In this article,after analyzing deviations of the refractive indices resulting from the angle when using the two methods,we propose a method to correct the extracting refractive indices.Our method could theoretically eliminate errors that are caused by the angle.Experiments further prove that this correction method is effective.","PeriodicalId":50181,"journal":{"name":"红外与毫米波学报","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69888818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Design of a W-band sub-harmonic mixer by employing microstrip technology 利用微带技术设计w波段次谐波混频器

IF 0.7 4区物理与天体物理

红外与毫米波学报 Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1010.2013.00242

Zhengbin Xu, C. Qian, W. Dou, Hong-yan Su

引用次数: 4

An uncooled infrared readout circuit with substrate temperature compensation 一种带衬底温度补偿的非制冷红外读出电路

IF 0.7 4区物理与天体物理

红外与毫米波学报 Pub Date : 2013-01-01 DOI: 10.3724/sp.j.1010.2013.00248

Liao Bao

引用次数: 4

Analysis of thermal infrared emissivity for sand dust source regions in northwest China 西北沙尘源区热红外发射率分析