Ngā whanaketanga hou i roto ingā taputapu whakaahua horonga huka teitei te aro
Te aro nui ki te pāmahana rūma 1550 nmpūoko photodiode horonga
I roto i te awhe tata-infrared (SWIR), he whānuitia te whakamahinga o ngā diode avalanche tere-teitei tairongo i roto i ngā whakawhitiwhiti optoelectronic me ngā tono liDAR. Heoi, ko te photodiode avalanche tata-infrared (APD) o nāianei e whakahaerehia ana e te diode pakaru avalanche Indium gallium arsenic (InGaAs APD) kua whakawhāitihia tonutia e te haruru ionization tukinga matapōkere o ngā rauemi rohe whakarea tuku iho, indium phosphide (InP) me te indium konumohe arsenic (InAlAs), ka hua ake he whakahekenga nui o te tairongo o te taputapu. I roto i ngā tau, he maha ngā kairangahau e rapu kaha ana i ngā rauemi semiconductor hou e hototahi ana ki ngā tukanga tūāpapa optoelectronic InGaAs me InP, ā, he iti rawa te mahi haruru ionization pānga rite ki ngā rauemi silicon papatipu.
Ka āwhina te pūoko photodiode avalanche 1550 nm auaha i te whanaketanga o ngā pūnaha LiDAR.
Kua angitu te whakawhanake a tētahi rōpū kairangahau i te United Kingdom me te United States i tētahi taputapu whakaahua APD hou 1550 nm te tairongo teitei (pūoko whakaahua horonga), he putanga hou e oati ana ka tino whakapai ake i te mahi a ngā pūnaha LiDAR me ētahi atu tono optoelectronic.
He painga nui ngā rauemi hou
Ko te mea nui o tēnei rangahau ko te whakamahinga auaha o ngā rauemi. I whiriwhiria e ngā kairangahau a GaAsSb hei paparanga mimiti me AlGaAsSb hei paparanga whakarea. He rerekē tēnei hoahoa i ngā InGaAs/InP tuku iho, ā, he nui ngā painga e puta mai ana:
1. Paparanga mimiti GaAsSb: He rite te tauwehenga mimiti o GaAsSb ki te InGaAs, ā, he māmā ake te whakawhiti mai i te paparanga mimiti GaAsSb ki te AlGaAsSb (paparanga whakarea), ka whakaiti i te pānga mahanga, ka whakapai ake hoki i te tere me te whai huatanga mimiti o te taputapu.
2. Paparanga whakarea AlGaAsSb: He pai ake te mahi a te paparanga whakarea AlGaAsSb i te paparanga whakarea InP me InAlAs tuku iho. Ko te nuinga o te wā ka kitea i roto i te whakanui nui i te pāmahana rūma, te whānui o te hononga me te haruru nui rawa atu.
Me ngā tohu mahi tino pai
Ko te mea houPūoko whakaahua APD(te pūoko photodiode avalanche) e tuku ana hoki i ngā whakapainga nui ki ngā inenga mahi:
1. Te whakanui tino teitei: I tutuki te whakanui tino teitei o te 278 i te pāmahana rūma, ā, nō nā tata nei i whakapai ake a Tākuta Jin Xiao i te arotautanga hanganga me te tukanga, ā, i whakapiki ake te whakanui mōrahi ki te M=1212.
2. Haruru iti rawa: e whakaatu ana i te haruru taikaha tino iti (F < 3, whakanui M = 70; F<4, whakanui M=100).
3. Teitei o te whai huatanga matū: i raro i te whakanuinga mōrahi, ko te teitei o te whai huatanga matū ko te 5935.3%. Te pumau pāmahana kaha: ko te aro ki te pakaru i te pāmahana iti ko te 11.83 mV/K.
Pikitia 1 Te haruru nui o te APDngā taputapu kimi whakaahuaki te whakataurite ki tētahi atu taputapu whakaahua APD
Ngā tūponotanga whānui mō te tono
He pānga nui tō tēnei APD hou ki ngā pūnaha liDAR me ngā tono photon:
1. Te ōwehenga tohu-ki-haruru kua whakapaitia: Ko ngā āhuatanga whakanui nui me te iti o te haruru ka whakapai ake i te ōwehenga tohu-ki-haruru, he mea nui tēnei mō ngā tono i roto i ngā taiao ngoikore-photon, pērā i te aroturuki hau kati kōtuhi.
2. Hototahi kaha: Kua hangaia te taputapu whakaahua APD hou (avalanche photodetector) kia hototahi ki ngā tūāpapa hikohiko indium phosphide (InP) o nāianei, kia pai ai te whakaurunga ki ngā pūnaha whakawhitiwhiti arumoni o nāianei.
3. Teitei o te whai huatanga o te mahi: Ka taea te mahi pai i te pāmahana rūma me te kore he tikanga whakamatao uaua, e whakangāwari ana i te whakatinanatanga i roto i ngā tono mahi maha.
Ko te whanaketanga o tēnei pūoko whakaahua APD SACM 1550 nm hou (avalanche photodetector) he putanga nui i roto i te mara, e aro ana ki ngā herenga matua e pā ana ki te nui o te haruru me ngā hua whānui whiwhi i roto i ngā hoahoa pūoko whakaahua APD tuku iho (avalanche photodetector). E matapaetia ana ka whakarei ake tēnei auaha i ngā kaha o ngā pūnaha liDAR, inā koa i roto i ngā pūnaha liDAR kore tangata, me ngā whakawhitiwhiti kōrero ātea kore utu.
Wā tuku: Hanuere-13-2025