Tib photon InGaAs photodetector

Ib leeg photonInGaAs photodetector

Nrog rau kev loj hlob sai ntawm LiDAR, lubpom lub teebthev naus laus zis thiab kev siv thev naus laus zis siv rau kev siv lub tsheb tsis siv neeg taug qab cov duab thev naus laus zis kuj tseem muaj cov kev xav tau ntau dua, qhov kev xav tau thiab lub sijhawm daws teeb meem ntawm lub tshuab ntes siv hauv cov cuab yeej siv hluav taws xob tsawg tsawg tsis tuaj yeem ua tau raws li qhov xav tau tiag tiag. Ib qho photon yog qhov tsawg tshaj plaws lub zog ntawm lub teeb, thiab lub teeb pom kev zoo nrog lub peev xwm ntawm ib qho kev tshawb pom photon yog cov cuab yeej kawg ntawm kev tshawb pom lub teeb qis. Piv nrog InGaAsAPD photodetector, ib leeg-photon detectors raws li InGaAs APD photodetector muaj cov lus teb ceev dua, rhiab heev thiab ua haujlwm tau zoo. Yog li ntawd, ib tug series ntawm kev tshawb fawb ntawm IN-GAAS APD photodetector ib photon detectors tau nqa tawm nyob rau hauv tsev thiab txawv teb chaws.

Cov kws tshawb fawb los ntawm University of Milan hauv ltalis thawj zaug tsim qauv ob sab los simulate tus cwj pwm hloov pauv ntawm ib qho photon.Lub avalanche photodetectorXyoo 1997, thiab muab cov lej simulation ntawm cov yam ntxwv hloov pauv ntawm ib qho photon avalanche photodetector. Tom qab ntawd xyoo 2006, cov kws tshawb fawb tau siv MOCVD los npaj cov duab geometricInGaAs APD photodetectorib leeg-photon detector, uas tau nce ib leeg-photon nrhiav kom tau efficiency mus rau 10% los ntawm kev txo cov reflective txheej thiab txhim kho cov hluav taws xob teb ntawm lub heterogeneous interface. Hauv xyoo 2014, los ntawm kev txhim kho cov zinc diffusion ntxiv thiab txhim kho cov qauv ntsug, ib tus duab thaij duab pom tau zoo dua, nce mus txog 30%, thiab ua tiav lub sijhawm jitter txog 87 ps. Hauv xyoo 2016, SANZARO M et al. Kev koom ua ke ntawm InGaAs APD photodetector ib leeg-photon ntes nrog monolithic integrated resistor, tsim ib qho kev cog lus ib leeg-photon suav module raws li lub tshuab ntes, thiab tau npaj cov txheej txheem hybrid quench uas txo qis avalanche nqi, yog li txo qis tom qab pulse thiab optical crosstalk, thiab txo lub sij hawm jitter rau 70 ps. Tib lub sijhawm, lwm pab pawg tshawb fawb kuj tau tshawb fawb txog InGaAs APDphotodetectorib leeg photon detector. Piv txwv li, Princeton Lightwave tau tsim InGaAs / InPAPD ib leeg photon ntes nrog cov qauv qauv thiab muab tso rau hauv kev lag luam siv. Lub koom haum Shanghai of Technical Physics tau sim ib leeg-photon kev ua tau zoo ntawm APD photodetector siv kev tshem tawm cov zinc deposits thiab lub capacitive balanced gate mem tes hom nrog ib tug tsaus nti suav ntawm 3.6 × 10 ⁻⁴ / ns pulse ntawm ib tug mem tes zaus ntawm 1.5 MHz. Joseph P et al. tsim cov qauv mesa InGaAs APD photodetector ib photon detector nrog wider bandgap, thiab siv InGaAsP raws li cov absorbing txheej txheej kom tau ib tug tsawg tsaus nti suav tsis muaj kev cuam tshuam qhov kev tshawb nrhiav efficiency.

Kev khiav hauj lwm hom ntawm InGaAs APD photodetector ib photon detector yog dawb ua hauj lwm hom, uas yog, lub APD photodetector yuav tsum tau quench lub peripheral circuit tom qab avalanche tshwm sim, thiab rov qab tom qab quenching rau ib lub sij hawm. Yuav kom txo tau qhov cuam tshuam ntawm quenching ncua sij hawm, nws yog roughly faib ua ob hom: Ib qho yog siv passive lossis nquag quenching circuit kom ua tiav quenching, xws li active quenching circuit siv los ntawm R Thew, thiab lwm yam. Daim duab (a) , (b) yog ib daim duab yooj yim ntawm kev tswj hluav taws xob thiab hluav taws xob quenching Circuit Court thiab nws cov kev sib txuas nrog APD photodetector, uas tau tsim los ua haujlwm hauv gated lossis dawb khiav hom, txo qhov teeb meem yav dhau los uas tsis tau pom dua tom qab-mem tes. Ntxiv mus, qhov kev tshawb pom kev ua haujlwm ntawm 1550 nm yog 10%, thiab qhov tshwm sim ntawm cov mem tes tom qab raug txo kom tsawg dua 1%. Qhov thib ob yog kom paub ceev ceev quenching thiab rov qab los ntawm kev tswj cov theem ntawm kev tsis ncaj ncees voltage. Txij li thaum nws tsis nyob ntawm qhov kev tawm tswv yim tswj ntawm avalanche mem tes, lub sijhawm ncua sij hawm ntawm quenching yog txo qis thiab kev tshawb nrhiav kev ua haujlwm ntawm lub tshuab ntes tau zoo dua. Piv txwv li, LC Comandar li al siv hom gated. Ib tug gated ib-photon ntes raws li InGaAs/InPAPD tau npaj. Qhov kev tshawb pom ib leeg-photon ua tau zoo tshaj 55% ntawm 1550 nm, thiab tom qab-miv qhov tshwm sim ntawm 7% tau ua tiav. Rau lub hauv paus no, University of Science thiab Technology ntawm Tuam Tshoj tau tsim ib lub liDAR system siv ntau hom fiber ntau ib txhij ua ke nrog dawb-hom InGaAs APD photodetector ib-photon ntes. Cov cuab yeej sim tau pom hauv daim duab (c) thiab (d), thiab kev tshawb pom ntawm ntau txheej huab nrog qhov siab ntawm 12 km yog pom tau nrog lub sijhawm daws teeb meem ntawm 1 s thiab qhov kev daws teeb meem ntawm 15 m.