Inqubekela phambili yakamuva ku-Avalanche PhotoDetectors

Intuthuko yakamuvaI-Avalanche PhotoDetectors

Ukushisa kwamakamelo okushisa okuphezulu kwe-Sensitivity 1550 NMI-Avalanche Photodiode Detector

Ebhendini eliseduze le-infrared (SWIR), ukuzwela okuphezulu okuphezulu kwe-avalanche diodos asetshenziswa kakhulu ekuxhumaneni kwe-opoleeryronic kanye nezicelo ze-lidar. Kodwa-ke, i-avalanche photodiode yamanje eseduze ye-apalanche (APD) ephethwe yi-Indium Gallium Arsenic Avalanche Breakdown Diode (Ingaas APD) ibilokhu inomkhawulo ngomsindo wokushayisana okungahleliwe, i-Indium phosphide (inp) ne-Indium aluminium arsenic ( I-Inalas), okuholela ekunciphiseni okukhulu kokuzwela kwensiza. Kuyo yonke le minyaka, abacwaningi abaningi bafuna ngentshiseko izinto ezintsha ze-semiconductor ezihambisana nezinqubo ze-Ingaas kanye ne-IntraElectronic yesikhulumi sePlatform futhi zinomthelela we-Ultra-Low Umthelela Wokusebenza okufana nezinto zokwakha okuningi.

Umshini we-PhotoDoode we-Innovative 1550 NM AVALAnCHE WE-Photodiode usiza ukuthuthukiswa kwezinhlelo ze-lidar

Iqembu labaphenyi e-United Kingdom nase-United States liba nesikhathi sokuqala sakha ngempumelelo i-Ultra-High Steritivity 1550 NM PhotoDetector (I-Avalanche PhotoDepector), impumelelo ethembisa ukuthuthukisa kakhulu ukusebenza kwezinhlelo ze-lidar nezinye izinhlelo zokusebenza ze-opoleelectronic.

Izinto ezintsha zinikeza izinzuzo ezibalulekile

Ukugqamiswa kwalolu cwaningo ukusetshenziswa kwezinto zokwakha. Abaphenyi bakhethe iGaassb njengongqimba lokumunca kanye ne-algaasb njengesendlalelo esiphindaphindayo. Lo mklamo uhlukile kwi-IMAAS yendabuko / i-INP futhi ulethe izinzuzo ezinkulu:

I-1.Gaassb Absorption Layer: IGaassB ine-coefficient efanayo yokumunca, kanye noshintsho kusuka eGaassb Ablorption Layer kuya ku-Algaassb (i-Multiplier ungqimba) kulula, ukunciphisa ijubane kanye nokwenza ngcono ukusebenza kwejubane kanye nokwenza ngcono ukushesha kwensiza.

Ingqimba ye-2.Algaassb Multiplierb: I-Algaasb Multiplier ungqimba ephakeme kune-IPP yendabuko ye-INP ne-Inalas Multipling ungqimba ekusebenzeni. Ibonakala ikakhulukazi ekuzuzeni okuphezulu ekushiseni kwegumbi, i-bandwidth ephezulu kanye nomsindo ophansi we-ultra-low.

Ngezinkomba zokusebenza ezinhle kakhulu zokusebenza

OkushaI-PhotoDector ye-APD(I-Avalanche Photodiode Detector) futhi inikeza ukuthuthuka okukhulu kuma-metric asebenza kahle:

1. I-Ultra-High Mon: Inzuzo ephezulu kakhulu engama-278 yatholakala emazingeni okushisa asekamelweni, futhi muva nje uDkt Jin Xiao ithuthukise ukwenziwa kwesakhiwo kanye nenqubo, futhi inzuzo ephezulu yandiswa yaya ku-M = 1212.

2. Umsindo ophansi kakhulu: ukhombisa umsindo ophansi kakhulu (F <3, thola m = 70; f <4, thola m = 100).

3. Ukusebenza kahle kwe-quantum ephezulu: ngaphansi kwenzuzo ephezulu, ukusebenza kahle kwe-quantum kuphakeme njengo-5935.3%. Ukuqina kokushisa okunamandla: Ukuzwela kokuphuka ezindaweni eziphansi kucishe kube ngu-11.83 MV / K

Umdwebo 1 Umsindo we-APDAmadivayisi we-PhotoDectorqhathanisa nenye iPhotoDepector ye-APD

Amathemba wohlelo lokusebenza olubanzi

Le ardd entsha inemiphumela ebalulekile yezinhlelo ze-lidar kanye nezicelo ze-Photon:

1

2. Ukuhambisana okuqinile

3. Ukusebenza kahle kokusebenza okuphezulu: Kungasebenza kahle ekushiseni kwegumbi ngaphandle kwezindlela eziyinkimbinkimbi zokupholisa, ukwenza lula ukuthunyelwa ezihlolweni ezahlukahlukene ezisebenzayo.

Ukuthuthukiswa kwalesi sikhathi esisha se-1550 NM SACM APD PhotoDenet (Avalanche PhotoDepector) kufanekisela ukuphumelela okukhulu emkhakheni, kubhekisisa umkhawulo wokhiye ohambisana nomsindo owengeziwe futhi uthole imikhiqizo ye-bandwidth kumiklamo yendabuko ye-APD (AvalanChoctoctor) Design. Lokhu kusungulwa okusha kulindeleke ukuthi kukhuthaze amandla amasistimu we-lidar, ikakhulukazi ezinhlelweni zama-lidar ezingahlelwanga, kanye nokuxhumana kwamahhala.