Taw qhia, Photon suav homlinear avalanche photodetector
Photon suav cov thev naus laus zis tuaj yeem ua kom pom tseeb lub photoD cov khoom siv hluav taws xob, thiab sau cov ntaub ntawv ntawm cov phiaj xwm hluav taws xob tsis muaj peev xwm ua rau cov phiaj xwm ntsuas hluav taws xob 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 li nyob ze-tsis muaj kev vam meej ntawm hom, muaj kev txwv tsis pub dhau los, tsis muaj kev tiv thaiv kev tiv thaiv kev ua tau zoo thiab tsis paub cai suav nrog 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 tshaj (piv nrog cov suab nrov tshaj FSI ~ 2-3 ntawm cov cuab yeej siv tsev neeg (saib lub teeb liab 1), yog li ntawd lub teeb liab 1 (saib daim duabAvalanche 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 niaj hnub suav cov thev naus laus zis muaj ntau qhov kev ntxub ntxaug, thiab muaj peev xwm tawm suab rau lub computer txuas ntxiv, thiab kev ua tiav, uas yog tsis sib xws 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 khoom siv hluav taws xob tsis txaus ntseeg, thiab lwm yam ntawm cov paib tsis muaj zog. Cov Mercury Cadmium qhia qhia txog avalanche photodetector muaj yuav luag tsis pub siv rau hauv photon suav, thiab yog ib qho kev tswj hwm lub luag haujlwm ntawm photon suav nrog cov khoom siv hauv lub neej yav tom ntej.
Lub Sijhawm Post: Jan-14-2025