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, ka 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 waahanga kotahi-photon tatau tatau i runga i te kaitirotiro, me te whakaaro he tikanga tinei ranu i tino whakaitihia te utu o te horonga, na reira ka whakaheke i te pou-pulse me te whakawhiti whatu, me 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, ka whakauruhia 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, kua wehea kia rua nga momo: Ko tetahi ko te whakamahi i te ara iahiko tiini hohe ranei hei whakatutuki i te tineia, penei i te ara iahiko tiini hohe e whakamahia ana e te R Thew, me etahi atu. Ko te ahua (a), (b) he hoahoa ngawari o te mana hiko me te ara iahiko tinei hohe me tona hononga ki te APD photodetector ki te mahi kore utu, kua whanakehia te aratau APD photodetector ki te mahi kore utu. te raruraru i muri i te pupuhi kaore ano i tino kitea. 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 horo, 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% o muri mai i te pumanawa. 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