%0 Journal Article
%T Designandanalysisofresonantcavity-enhancedquantumringinter-subbandphotodetectorwithresonanttunnelingbarriersforterahertzdetection
%A Mahdi
%A Zavvari
%A Mohammad
%A Karimi
%A Kambiz
%A Abedi
%J 红外与毫米波学报
%D 2014
%X TheeffectofresonantcavitystructureontheperformanceoperationofInAs/GaAsquantumringinter-subbandphotodetectorisstudiedfordetectionofterahertzradiationsrange.Inordertoconfinementofopticalfieldwithinactiveregionandconsequentlyenhancementinresponsivityofdevice,twoperiodsofAl2O3/GaAsdistributedbraggreflectorsareusedasbottomdielectricmirrorandathinlayerofAumaterialastopmirrorofdevice.Forfurtherimprovementindetectivity,Al0.3Ga0.7As/In0.3Ga0.7Asresonanttunnelingbarriersareincludedinabsorptionlayerstoreducedarkcurrentofdevice.Proposedphotodetectorshowsapeakresponsivityofabout0.4(A/W)andquantumefficiencyof1.2%atthewavelengthof80μm(3.75THz).Furthermore,specificdetectivity(D*)ofdeviceiscalculatedandresultsarecomparedtoconventionalquantumringinter-subbandphotodetector.ResultspredictaD*of~1011(cm.Hz1/2/W)fordeviceatT=80KandV=0.4VwhichistwoordersofmagnitudehigherthanthatofconventionalQRIPs.
%K 量子环带间探测器
%K 谐振腔
%K 探测
%K 分布布拉格反射
%K 共振隧道屏障
%U http://journal.sitp.ac.cn/hwyhmb/hwyhmbcn/ch/reader/view_abstract.aspx?file_no=130447&flag=1