Kev Kub Ceev Pheodetectors tau qhia los ntawm Ingaas photodetectors

Kev Kub Ceev Duab yog qhia los ntawmIngaas photodetectors

High-ceev photodetectorsHauv kev sib txuas lus ntawm kev sib txuas lus kho qhov muag suav nrog III-V Ingaas photodetectors thiab IV Tag Nrho thiab GE /Si PhotodetectorsCov. Tus qub yog ib txwm nyob ze infrared ntes, uas tau ua rau lub hnub qub tshiab, thiab yog qhov chaw kub ntawm kev tawm tsam thoob ntiaj teb Optoelectronics nyob rau xyoo tas los no. Ib qho ntxiv, cov cuab yeej siv tshiab raws li cov pob txha khoom, organic thiab ob-seem ntawm cov khoom siv tau sai vim muaj kev ua tau yooj yim, kev hloov kho tau yooj yim thiab tune. Muaj ntau qhov sib txawv ntawm cov neeg kuaj tshiab no thiab cov tsoos inorganic photodetectors hauv cov khoom muaj peev xwm thiab cov txheej txheem tsim khoom. Cov tshuaj ntsuam no muaj cov peev txheej kev nqus tau zoo thiab muaj cov hluav taws xob cov khoom siv tau siv tau rau lawv cov khoom siv tsawg dua thiab cov khoom siv roj ntsha tshwj xeeb thiab cov khoom lag luam siab. Txawm li cas los xij, piv nrog Ingaas thiab SI / ge detectors, cov cuab yeej tshiab tseem yuav tau txhim kho nyob rau hauv cov nqe lus ntawm lub sij hawm ntev ruaj khov, kev loj hlob thiab kev sib xyaw.

Ingaas yog ib qho ntawm cov ntaub ntawv zoo tshaj plaws rau kev pom kev kub ceev thiab siab teb sau ntawv. Ua ntej tshaj plaws, Ingaas yog bandgap ncaj qha bandgaonductor cov khoom siv tau los ntawm thiab GA kom ua tiav qhov kev kuaj pom ntawm lub ntsej muag tshiab ntawm cov wavelengths. Ntawm lawv, in0.53ga0.47as tau sib phim zoo kawg nkaus nrog lub ntsej muag substrate ntawm inp, thiab muaj cov hluav taws xob ua kom muaj kev sib txuas lus zoo hauv kev npajphotodetectors, thiab tsaus nti tam sim no thiab lub luag haujlwm ua tau zoo kuj yog qhov zoo tshaj plaws. Thib ob, ingaas thiab inp cov ntaub ntawv ob leeg muaj cov khoom hluav taws xob muaj siab, thiab lawv cov velated elepic drift velocity yog li 1 × 107 cm / s. Nyob rau tib lub sijhawm, ingaas thiab inp cov ntaub ntawv muaj electron velocity overshoot nyhuv nyob rau hauv cov ntaub teb tshwj xeeb. Lub sijhawm ua haujlwm ntau tshaj tawm tuaj yeem muab faib ua 4 × 107cm / s, uas yog qhov ua kom pom lub sijhawm loj dua-txwv bandwidth. Tam sim no ingaas photodetector yog cov tseem ceeb tshaj plaws photoDetector, thiab 25 GBaud / s degrege nrhav nto teeb meem. Me me loj, rov qab cuam tshuam thiab loj bandwidth nto muaj cov txheej txheem sib txawv, uas yog feem ntau haum rau kev kub ceev thiab muaj kev ruaj khov tso cai siv. Txawm li cas los xij, cov kev sojntsuam saum npoo deg yog txwv los ntawm nws txoj kev txuas txuas thiab yog qhov nyuaj rau kev sib sau ua ke nrog lwm cov khoom siv Optoelectronic. Yog li ntawd, nrog kev txhim kho Optoelectronic sib xyaw ua ke, Watcheide Coultoas Modules yog yuav luag txhua qhov kev siv WaveGuide txuas txuas nrog WaveLLED qauv. Raws li cov khoom sib txawv ntawm cov ntaub ntawv sib txawv, cov WaveGuide Coupling Internet photoelectric kev sojntsuam tuaj yeem muab faib ua ob pawg: inp thiab si. Cov ntaub ntawv kab ntsig ntawm Inp substrate muaj qhov siab zoo thiab yog qhov tsim nyog dua rau kev npaj ntawm cov khoom siv siab. Txawm li cas los xij, cov lus tsis zoo ntawm III-V ntaub ntawv, Ingaas cov ntaub ntawv thiab Si substrates zus los yog sib koom tes zoo, thiab kev ua tau zoo ntawm lub ntaus ntawv tseem muaj chav loj rau kev txhim kho.