Photodetector e le 'ngoe ea InGaAs

Fotone e le 'ngoeInGaAs photodetector

Ka tsoelo-pele e potlakileng ea LiDAR, theho lemoha ha leselithekenoloji le theknoloji e fapaneng e sebelisoang bakeng sa theknoloji ea litšoantšo ea ho latela koloi ea othomathike le eona e na le litlhoko tse phahameng, kutloisiso le tharollo ea nako ea mochine o sebelisoang ho thekenoloji e tloaelehileng ea ho lemoha leseli le tlaase e ke ke ea finyella litlhoko tsa sebele. Single photon ke karolo e nyenyane ka ho fetisisa ea matla a khanya, 'me mochine o nang le bokhoni ba ho lemoha photon e le' ngoe ke sesebelisoa sa ho qetela sa ho lemoha khanya e tlaase. Ha e bapisoa le InGaAsAPD photodetector, li-detectors tsa photon e le 'ngoe tse thehiloeng ho InGaAs APD photodetector li na le lebelo le phahameng la ho arabela, kutloisiso le katleho. Ka hona, letoto la lipatlisiso mabapi le IN-GAAS APD photodetector single photon detectors li entsoe lapeng le kantle ho naha.

Bafuputsi ba Univesithi ea Milan ea Italy ba ile ba qapa mohlala oa mahlakore a mabeli ho etsisa boitšoaro ba nakoana ba photon e le 'ngoe.Avalanche photodetectorka 1997, mme a fana ka liphetho tsa papiso ea lipalo tsa litšoaneleho tsa nakoana tsa sesebelisoa se le seng sa photon avalanche photodetector. Joale ka 2006, bafuputsi ba ile ba sebelisa MOCVD ho lokisa geometri e hlophisitsoengInGaAs APD photodetectormochine o le mong oa photon, o ileng oa eketsa katleho ea ho lemoha photon e le 'ngoe ho 10% ka ho fokotsa sekhahla se bonahatsang le ho ntlafatsa sebaka sa motlakase ho sebopeho sa heterogeneous. Ka 2014, ka ho tsoela pele ho ntlafatsa maemo a phallo ea zinki le ho ntlafatsa sebopeho se otlolohileng, mochine o le mong oa photon o na le bokhoni bo phahameng ba ho lemoha, ho fihla ho 30%, 'me o finyella jitter ea nako e ka bang 87 ps. Ka 2016, SANZARO M et al. e kopantseng InGaAs APD photodetector single-photon detector e nang le monolithic integrated resistor, e entsoeng mochine oa ho bala oa photon o le mong o thehiloeng holim'a mochine, 'me a etsa tlhahiso ea mokhoa oa hybrid quench o fokolitseng haholo tefiso ea avalanche, kahoo e fokotsa post-pulse le optical crosstalk, le fokotsa nako jitter ho 70 ps. Ka nako e ts'oanang, lihlopha tse ling tsa lipatlisiso le tsona li entse lipatlisiso ka InGaAs APDphotodetectormochine o le mong oa photon. Mohlala, Princeton Lightwave e qapile InGaAs/InPAPD sesebelisoa se le seng sa photon se nang le sebopeho sa polane mme se se kenye tšebelisong ea khoebo. Shanghai Institute of Technical Physics e ile ea lekola ts'ebetso ea photon e le 'ngoe ea APD photodetector e sebelisa ho tlosoa ha zinki deposits le capacitive balanced gate pulse mode ka palo e lefifi ea 3.6 × 10 ⁻⁴/ns pulse ka pulse frequency ea 1.5 MHz. Joseph P le al. e thehile sebopeho sa mesa InGaAs APD photodetector e le 'ngoe ea photon detector e nang le bandgap e pharaletseng,' me e sebelisitse InGaAsP e le lisebelisoa tse monyang ho fumana palo e tlaase e lefifi ntle le ho ama ts'ebetso ea ho lemoha.

Mokhoa oa ts'ebetso oa InGaAs APD photodetector single photon detector ke mokhoa oa mahala oa ho sebetsa, ke hore, APD photodetector e hloka ho tima potoloho ea peripheral ka mor'a hore ho be le avalanche, 'me e hlaphoheloe ka mor'a ho tima nako e itseng. E le ho fokotsa tšusumetso ea nako ea ho lieha ho tima, e batla e arotsoe ka mefuta e 'meli: E 'ngoe ke ho sebelisa potoloho ea ho tima kapa e sebetsang ho finyella quenching, joalo ka potoloho e sebetsang ea quenching e sebelisoang ke R Thew, joalo-joalo Setšoantšo (a) , (b) ke setšoantšo se nolofalitsoeng sa taolo ea elektronike le potoloho e sebetsang ea ho tima le ho hokahanya ha eona le APD photodetector, e entsoeng ho sebetsa ka mokhoa oa ho sebetsa ka gated kapa mahala, ho fokotsa haholo bothata bo neng bo e-s'o ka bo e-ba teng ka mor'a pulse. Ho feta moo, ts'ebetso ea ho lemoha ho 1550 nm ke 10%, 'me monyetla oa ho khutlela morao o fokotsehile ho ea ka tlase ho 1%. Ea bobeli ke ho lemoha ho tima le ho hlaphoheloa kapele ka ho laola boemo ba voltage ea bias. Kaha ha e itšetlehe ka taolo ea maikutlo a avalanche pulse, nako ea ho lieha ha ho tima e fokotsehile haholo mme ts'ebetso ea ho lemoha ea detector e ntlafatsoa. Ka mohlala, LC Comandar et al sebelisa mokhoa oa gated. Ho ile ha lokisoa sebutli se nang le fotone e le 'ngoe se thehiloeng ho InGaAs/InPAPD. Ts'ebetso ea ho lemoha ha photon e le 'ngoe e ne e feta 55% ho 1550 nm,' me monyetla oa post-pulse oa 7% o fihletsoe. Motheong ona, Univesithi ea Saense le Theknoloji ea Chaena e thehile tsamaiso ea liDAR e sebelisang fiber ea mefuta e mengata ka nako e le 'ngoe e kopantsoe le mochine oa mahala oa InGaAs APD photodetector single-photon detector. Thepa ea liteko e bontšoa ho Setšoantšo (c) le (d), 'me ho fumanoa ha maru a mangata a nang le bolelele ba lik'hilomithara tse 12 ho lemohuoa ka qeto ea nako ea 1 s le qeto ea sebaka sa 15 m.