Taw qhia, Photon suav homlinear avalanche photodetector
Photon suav cov thev naus laus zis tuaj yeem ua kom pom tseeb lub photon lub cim kom kov yeej cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob ntawm cov khoom siv hluav taws xob tsis muaj zog , thiab suav cov ntaub ntawv ntawm lub hom phiaj ntsuas raws li tus nqi ntawm lub photon meter. Txhawm rau kom paub lub teeb pom kev zoo heev, ntau yam sib txawv ntawm cov twj paj nruag nrog Photon nrhiav kom muaj peev xwm tau kawm hauv ntau lub tebchaws. Ib lub xeev ruaj khov avalanche photodiode (Ad Photodetector) yog lub cuab yeej uas siv cov phiaj xwm sab hauv lub teeb rau kev teeb tsa. Piv nrog nqus cov khoom siv nqus tsev, cov khoom siv-lub xeev tau pom zoo, thiab lwm yam thiab lwm yam thiab cov khoom siv sib nqus
APD photoDetector ntaus ntawvMuaj geiger hom (GM) thiab linear hom (LM) Ob hom kev ua haujlwm suav, tam sim no APD cov thev naus laus zis APD ntaus ntawv. Geiger hom APD cov cuab yeej muaj cov siab rhiab ntawm theem ntawm ib lub photon thiab siab teb ceev ntawm kaum ntawm nanoseconds kom tau txais lub sijhawm siab. Txawm li cas los xij, Geiger Hom APD muaj qee cov teeb meem xws li ua kom pom qhov tsis txaus ntseeg, yog li nws tsis sib haum xeeb ntawm tus nqi siab thiab qis qes. Photon Txee raws nyob ze-uas tsis muaj kev vam meej ntawm hom kev tuag, tsis tas yuav muaj kev tuag lub sijhawm, tsis muaj kev sib tw tom qab, muaj cov khoom noj khoom haus quench, muaj cov khoom muaj ultra-siab, dav thiab cov kev hloov kho spectral ntau, thiab tuaj yeem yog qhov zoo ntawm kev ua kom zoo rau kev paub txog kev ua tau zoo thiab tsis tseeb suav tus nqi. Nws qhib ib daim ntawv thov daim ntawv thov hauv Infrared, yog qhov kev qhia txog kev suav ua ntej, thiab kev ua haujlwm nquag, fringe taug qab thiab lwm yam.
Lub hauv paus ntsiab lus ntawm photon suav hauv HGCDTE APD li
APD Photodetector li cas tuaj yeem npog ntau yam wavelengths, thiab ionization coefficients thiab qhov sib txawv heev (saib daim duab 1 (a)). Lawv nthuav tawm ib lub tshuab nqa khoom sib tshooj sib npaug nyob rau hauv cov nthwv dej yoj ntawm 1.3 ~ 11 μm. Yuav luag tsis muaj suab nrov tshaj (piv nrog cov suab nrov tshaj FSI ~ 2-3 ntawm Si Apd Devices thiab Fiii-v ~ 4 (Saib Daim Duab 1 (B)), kom lub teeb liab rau-suab nrov piv ntawm cov khoom siv yuav luag tsis cuam tshuam rau qhov nce, uas yog qhov zoo tshaj plaws infraredAvalanche photodetector.
Daim duab. 1 (a) kev sib raug zoo ntawm kev cuam tshuam ionization coeffici gratiecieciecieciecieciecieciult ntawm Mercury Cadmium qhia cov khoom thiab cov kab ua ke x ntawm CD; (b) kev sib piv ntawm cov suab nrov tshaj f ntawm APD cov khoom siv nrog cov tshuab sib txawv
Photon suav thev naus laus zis yog cov thev naus laus zis tshiab uas tuaj yeem digitically kho qhov muag tawm ntawm lub suab nrov los ntawm kev daws cov yees duab Pulses tsim los ntawm aphotodetectortom qab tau txais ib lub photon xwb. Txij li thaum lub teeb liab qis yog cov cim hluav taws xob tsawg dua nyob rau hauv lub sijhawm sau npe, cov hluav taws xob hluav taws xob tawm los ntawm cov neeg kuaj hluav taws xob kuj yog ntuj thiab txiav txim siab. Raws li cov xeeb ceem no ntawm lub teeb tsis muaj zog, pulse ua kom muaj kev sib cais thiab cov kev suav suav suav nrog kuaj pom tsis muaj zog. Cov ntaub ntawv tshiab tau suav cov thev naus laus zis muaj ntau qhov zoo, thiab ua kom muaj suab nrov, thiab tuaj yeem tso cov ntaub ntawv muaj zog, thiab tuaj yeem tsim tawm cov ntaub ntawv ruaj khov, thiab tuaj yeem tsim tawm cov ntaub ntawv ruaj khov, thiab tuaj yeem tsim tawm cov teeb meem siab rau lub khoos phis tawm rau cov teeb liab txuas ntxiv Thiab kev ua tiav, uas yog unmatched los ntawm lwm txoj kev kuaj pom. Tam sim no, lub photon suav cov txheej txheem tau siv dav hauv kev ntsuas kev lag luam thiab cov kev ntsuas hluav taws xob tsawg, cov khoom siv hluav taws xob tsis zoo, thiab lwm yam, uas cuam tshuam nrog Txhawm rau kom tau txais thiab kuaj pom ntawm cov paib tsis muaj zog. Cov Mercury Cadmium qhia hauv avalanche photodetector muaj yuav luag tsis muaj suab, lub teeb liab kev txwv tsis pub muaj kev sib npaug, thiab tsis muaj suab nrov, lub teeb liab avalanche, uas yog qhov haum Daim ntawv thov hauv Photon suav, thiab yog ib qho kev nthuav dav tseem ceeb ntawm photon suav cov cuab yeej suav hauv lub neej yav tom ntej.
Lub Sijhawm Post: Jan-14-2025