Ib lub photon InGaAs photodetector

Ib lub photon xwbInGaAs photodetector

Nrog rau kev loj hlob sai ntawm LiDAR, qhovkev kuaj pom lub teebthev naus laus zis thiab thev naus laus zis siv rau kev siv tshuab thaij duab tsis siv neeg kuj muaj cov kev xav tau siab dua, qhov rhiab heev thiab lub sijhawm daws teeb meem ntawm lub tshuab ntes siv hauv cov thev naus laus zis pom kev tsis tshua muaj teeb pom kev zoo ib txwm tsis tuaj yeem ua tau raws li qhov xav tau tiag tiag. Ib lub photon yog lub zog me tshaj plaws ntawm lub teeb, thiab lub tshuab ntes nrog lub peev xwm ntawm kev pom kev ib lub photon yog lub cuab yeej kawg ntawm kev pom kev tsis tshua muaj teeb pom kev zoo. Piv nrog InGaAsAPD photodetector, cov khoom siv ntes ib lub photon raws li InGaAs APD photodetector muaj kev teb ceev dua, kev rhiab heev thiab kev ua haujlwm zoo dua. Yog li ntawd, ntau qhov kev tshawb fawb txog IN-GAAS APD photodetector ib lub photon detectors tau ua tiav hauv tsev thiab txawv teb chaws.

Cov kws tshawb fawb los ntawm University of Milan hauv Ltalis thawj zaug tsim ib qho qauv ob-seem los ua qauv tus cwj pwm transient ntawm ib lub photon.lub tshuab ntes duab av qeegxyoo 1997, thiab tau muab cov txiaj ntsig simulation ntawm cov yam ntxwv transient ntawm ib lub photon avalanche photodetector. Tom qab ntawd xyoo 2006, cov kws tshawb fawb tau siv MOCVD los npaj ib daim duab geometric planar.InGaAs APD photodetectorib lub tshuab ntes photon, uas ua rau kom muaj kev ua haujlwm ntawm ib lub photon mus txog 10% los ntawm kev txo cov txheej txheem reflective thiab txhim kho lub zog hluav taws xob ntawm qhov sib txawv. Xyoo 2014, los ntawm kev txhim kho cov xwm txheej zinc diffusion thiab ua kom zoo dua cov qauv ntsug, lub tshuab ntes photon ib lub muaj kev ua haujlwm ntawm kev ntes tau zoo dua, txog li 30%, thiab ua tiav lub sijhawm jitter ntawm kwv yees li 87 ps. Xyoo 2016, SANZARO M et al. tau koom ua ke InGaAs APD photodetector ib lub photon detector nrog lub monolithic integrated resistor, tsim lub compact ib lub photon suav module raws li lub tshuab ntes, thiab tau tawm tswv yim txog txoj kev hybrid quench uas txo cov nqi avalanche, yog li txo cov post-pulse thiab optical crosstalk, thiab txo cov sijhawm jitter mus txog 70 ps. Tib lub sijhawm, lwm pawg tshawb fawb kuj tau ua kev tshawb fawb txog InGaAs APDlub tshuab ntes duabib lub tshuab ntes photon. Piv txwv li, Princeton Lightwave tau tsim InGaAs/InPAPD ib lub tshuab ntes photon nrog cov qauv planar thiab muab tso rau hauv kev siv lag luam. Lub Koom Haum Shanghai ntawm Kev Tshawb Fawb Txog Kev Tshawb Fawb tau sim qhov kev ua tau zoo ntawm ib lub photon ntawm APD photodetector siv kev tshem tawm cov zinc deposits thiab lub capacitive balanced gate pulse mode nrog qhov suav tsaus ntawm 3.6 × 10 ⁻⁴/ns pulse ntawm qhov zaus pulse ntawm 1.5 MHz. Joseph P et al. tsim lub qauv mesa InGaAs APD photodetector ib lub photon detector nrog bandgap dav dua, thiab siv InGaAsP ua cov khoom siv txheej absorbing kom tau txais qhov suav tsaus qis dua yam tsis cuam tshuam rau qhov kev ua haujlwm ntawm kev ntes.

Hom kev ua haujlwm ntawm InGaAs APD photodetector ib lub photon detector yog hom kev ua haujlwm dawb, uas yog, APD photodetector yuav tsum tau tua lub voj voog peripheral tom qab muaj av qeeg, thiab rov qab los tom qab quenching rau ib lub sijhawm. Txhawm rau kom txo qhov cuam tshuam ntawm lub sijhawm ncua sijhawm quenching, nws tau muab faib ua ob hom: Ib qho yog siv lub voj voog quenching passive lossis active kom ua tiav quenching, xws li lub voj voog quenching nquag siv los ntawm R Thew, thiab lwm yam. Daim duab (a), (b) yog daim duab yooj yim ntawm kev tswj hwm hluav taws xob thiab lub voj voog quenching nquag thiab nws txoj kev sib txuas nrog APD photodetector, uas tau tsim los ua haujlwm hauv hom gated lossis free running, txo qhov teeb meem post-pulse uas tsis tau ua tiav. Ntxiv mus, qhov ua tau zoo ntawm kev kuaj pom ntawm 1550 nm yog 10%, thiab qhov tshwm sim ntawm post-pulse raug txo kom tsawg dua 1%. Qhov thib ob yog kom paub txog kev quenching sai thiab rov qab los ntawm kev tswj hwm qib ntawm bias voltage. Vim tias nws tsis nyob ntawm kev tswj hwm kev tawm tswv yim ntawm avalanche pulse, lub sijhawm qeeb ntawm kev quenching raug txo qis thiab qhov kev ua haujlwm ntawm kev ntes tau zoo dua. Piv txwv li, LC Comandar et al siv hom gated. Lub gated single-photon detector raws li InGaAs / InPAPD tau npaj. Qhov kev ua haujlwm ntawm kev ntes ib-photon yog ntau dua 55% ntawm 1550 nm, thiab qhov tshwm sim tom qab-pulse ntawm 7% tau ua tiav. Ntawm lub hauv paus no, University of Science thiab Technology ntawm Tuam Tshoj tau tsim lub kaw lus liDAR siv ntau hom fiber tib lub sijhawm ua ke nrog lub free-mode InGaAs APD photodetector ib-photon detector. Cov khoom siv sim tau pom hauv Daim Duab (c) thiab (d), thiab kev ntes ntawm ntau txheej huab nrog qhov siab ntawm 12 km tau pom nrog lub sijhawm daws teeb meem ntawm 1 s thiab qhov kev daws teeb meem ntawm 15 m.