whakaahua kotahiInGaAs photodetector
Na te whanaketanga tere o LiDAR, tekitea maramaKo te hangarau me te hangarau awheawhe e whakamahia ana mo te hangarau whakaata waka aunoa he nui ake nga whakaritenga, ko te tairongo me te wa whakatau o te kairapu e whakamahia ana i roto i te hangarau rapunga maamaa iti kaore e taea te whakatutuki i nga hiahia. Ko te photon kotahi te waahanga iti rawa o te hiko o te marama, a ko te kaitirotiro me te kaha o te kitenga whakaahua kotahi ko te taputapu whakamutunga mo te iti o te marama. Ka whakaritea ki a InGaAsAPD photo detector, Ko nga kaitirotiro whakaahua kotahi i runga i te InGaAs APD photodetector he nui ake te tere o te whakautu, te ngawari me te pai. Na reira, he raupapa rangahau mo te IN-GAAS APD photodetector kotahi nga kaitirotiro whakaahua whakaahua i mahia i te kainga me o waho.
Ko nga Kairangahau mai i te Whare Wananga o Milan i Itari i te tuatahi i whakawhanake i tetahi tauira ahu-rua hei whakataurite i te whanonga poto o te whakaahua kotahi.kaitirotiro whakaahua horongai te tau 1997, me te whakaputa i nga hua whaihanga tau o nga ahuatanga o te wa poto o te kaititiro whakaahua tohenga kotahi. I te tau 2006, i whakamahia e nga kairangahau te MOCVD ki te whakarite i tetahi ahuahanga papaInGaAs APD photodetectorte kaitirotiro whakaahua kotahi, i piki ake te pai o te kitenga whakaahua kotahi ki te 10% ma te whakaiti i te paparanga whakaata me te whakarei ake i te hiko hiko i te atanga heterogeneous. I roto i te 2014, ma te whakapai ake i nga tikanga whakamaarama o te zinc me te arotau i te hanganga poutū, he teitei ake te pai o te kitenga o te kaitirotiro whakaahua-kotahi, tae atu ki te 30%, a ka tutuki i te waa mo te 87 ps. I te tau 2016, SANZARO M et al. I whakauruhia te InGaAs APD photodetector kotahi-photon detector me te monolithic integrated parenga, i hangaia he kowae tatau kotahi-photon kiato i runga i te kaitirotiro, me te whakaaro he tikanga tinei ranu e tino whakaiti ana i te utu o te horonga, na reira ka whakaiti i te pou-pure me te whakawhiti whatu, a te whakaiti i te taima ki te 70 ps. I taua wa ano, ko etahi atu roopu rangahau i whakahaere rangahau mo InGaAs APDkaitirotiro whakaahuakotahi te kaitirotiro whakaahua. Hei tauira, kua hoahoatia e Princeton Lightwave te InGaAs/InPAPD te kaitirotiro whakaahua kotahi me te hanganga mahere me te whakauru ki te whakamahi arumoni. I whakamatauria e te Shanghai Institute of Hangarau Hangarau te mahi kotahi-whakaahua a te APD photodetector ma te whakamahi i te tangohanga o nga putunga zinc me te aratau putunga o te kuaha capacitive me te tatau pouri o te 3.6 × 10 ⁻⁴/ns pulse i te auautanga o te 1.5 MHz. Hohepa P et al. I hoahoatia te hanganga mesa InGaAs APD photodetector ka kitea he whakaahua whakaahua kotahi me te waahi whanui ake, me te whakamahi i te InGaAsP hei papanga paparanga mo te tango i te tatau pouri iti me te kore e pa ki te kaha o te kitenga.
Ko te aratau whakahaere o te InGaAs APD photodetector photon detector kotahi he aratau mahi kore utu, ara, me tineia e te APD photodetector te ara iahiko peripheral i muri i te puta mai o te horonga, me te whakaora i muri i te tinei mo te wa. Hei whakaiti i te paanga o te wa whakaroa tinei, ka wehewehea kia rua nga momo: Ko tetahi ko te whakamahi iahiko tiini hohe ranei hei whakatutuki i te tiini, penei i te iahiko tiini hohe e whakamahia ana e te R Thew, me etahi atu. Whakaahua (a) , (b) he hoahoa ngawari o te mana hiko me te ara iahiko tiini hohe me tona hononga ki te APD photodetector, kua whakawhanakehia hei mahi i roto i te aratau oma kuaha, kore utu ranei, ka tino whakaiti i te raru o muri mai i te puihi kaore ano kia tutuki. I tua atu, ko te kaha o te kitenga i te 1550 nm ko te 10%, a ka heke te tupono o te pou-pure ki te iti iho i te 1%. Ko te tuarua ko te mohio ki te tineia tere me te whakaora ma te whakahaere i te taumata o te ngaohiko rītaha. Mai i te mea kaore i te whakawhirinaki ki te mana urupare o te pupuhi o te avalanche, ka tino heke te wa whakaroa o te tinei me te pai ake o te kitenga o te kaitoi. Hei tauira, LC Comandar et al te whakamahi i te aratau kuaha. I whakaritea he kaitirotiro whakaahua-kotahi i runga i te InGaAs/InPAPD. Ko te kaha o te kimi whakaahua kotahi i runga ake i te 55% i te 1550 nm, a, kua tutuki te 7% te tupono o muri i te manawa. I runga i tenei kaupapa, i whakapumautia e te Whare Wananga o te Putaiao me te Hangarau o Haina he punaha liDAR ma te whakamahi i te muka aratau-maha i te wa kotahi me te aratau-kore InGaAs APD photodetector kotahi-photon detector. Ko nga taputapu whakamatautau e whakaatuhia ana i te Whakaahua (c) me te (d), a, ko te kitenga o nga kapua paparanga maha me te teitei o te 12 kiromita ka tutuki me te waa o te 1 s me te taumira mokowā o te 15 m.
Te wa tuku: Mei-07-2024