Imwe chete photon InGaAs photodetector

Single photonInGaAs photodetector

Nekukurumidza kukura kweLiDAR, iyokuona chiedzatekinoroji uye tekinoroji yekumhanyisa inoshandiswa kune otomatiki yekutevera mota yekutevera imaging tekinoroji inewo zvakakwirira zvinodikanwa, kunzwisiswa uye nguva yekugadzirisa ye detector inoshandiswa mune yechinyakare yakaderera yekuona tekinoroji haigone kuzadzisa izvo chaizvo zvinodiwa. Single photon ndiyo idiki simba rechiedza chechiedza, uye detector ine kugona kweimwe chete photon yekuona ndiyo yekupedzisira chishandiso chekudzikira kwechiedza chekuona. Kuenzaniswa neInGaAsAPD photodetector, single-photon detectors yakavakirwa paInGaAs APD photodetector ine yakakwirira yekupindura kumhanya, senitivity uye kugona. Naizvozvo, nhevedzano yetsvakiridzo paIN-GAAS APD photodetector single photon detectors yakaitwa kumba nekune dzimwe nyika.

Vatsvagiri kubva kuYunivhesiti yeMilan kuItaly vakatanga kugadzira modhi ine mativi maviri kutevedzera hunhu hwenguva pfupi hwefotoni imwe chete.Avalanche photodetectormuna 1997, uye akapa nhamba yekunyepedzera mhedzisiro yenguva pfupi hunhu hweimwe photon avalanche photodetector. Zvadaro muna 2006, vatsvakurudzi vakashandisa MOCVD kugadzirira planar geometricInGaAs APD photodetectorimwe chete photon detector, iyo yakawedzera iyo imwe-photon yekuona kushanda zvakanaka kusvika ku10% nekuderedza ratidziro yekuratidzira uye nekusimudzira munda wemagetsi pane heterogeneous interface. Muna 2014, nekuenderera mberi nekuvandudza zinc diffusion mamiriro uye optimize chimiro chakamira, imwe-photon detector ine yepamusoro yekuona kugona, kusvika 30%, uye inowana nguva jitter inosvika makumi masere nemasere ps. Muna 2016, SANZARO M et al. yakabatanidza InGaAs APD photodetector single-photon detector ine monolithic integrated resistor, yakagadzira compact single-photon counting module yakabva pa detector, uye yakaronga nzira yakasanganiswa yekudzima iyo yakaderedza zvakanyanya avalanche charge, nokudaro kuderedza post-pulse uye optical crosstalk, uye kuderedza nguva jitter kusvika 70 ps. Panguva imwecheteyo, mamwe mapoka ekutsvaga akaitawo tsvagiridzo paInGaAs APDphotodetectorimwe chete photon detector. Semuenzaniso, Princeton Lightwave yakagadzira InGaAs/InPAPD single photon detector ine planar chimiro uye inoiisa mukushandiswa kwekutengesa. Shanghai Institute of Technical Physics yakaedza kushanda kwekamwe-photon kweAPD photodetector vachishandisa kubviswa kwezinc deposits uye capacitive balanced gate pulse mode ine rima kuverenga 3.6 × 10 ⁻⁴/ns pulse pa pulse frequency ye 1.5 MHz. Joseph P et al. yakagadzira iyo mesa chimiro InGaAs APD photodetector imwe chete photon detector ine yakakura bandgap, uye yakashandisa InGaAsP seye inonwisa layer zvinhu kuti iwane yakaderera yakasviba kuverenga pasina kukanganisa kugona kwekuona.

Iyo yekushandisa modhi yeInGaAs APD photodetector imwe chete photon detector ndeyemahara oparesheni modhi, kureva kuti, iyo APD photodetector inoda kudzima kutenderera kwedunhu mushure mekunge avalanche yaitika, uye kupora mushure mekudzima kwenguva yakati rebei. Kuti uderedze kukonzeresa kunonoka kwekudzima nguva, inokamurwa kuita mhando mbiri: Imwe ndeye kushandisa passive kana inoshanda quenching seketi kuti iwane kudzima, senge inoshanda quenching circuit inoshandiswa neR Thew, etc. Mufananidzo (a) , (b) dhayagiramu yakareruka yemagetsi ekudzora uye inoshanda quenching reketi uye kubatana kwayo neAPD photodetector, iyo yakagadziridzwa kuti ishande mugedhi kana yemahara yekumhanya modhi, zvakanyanya kuderedza yaimbove isina kuitika post-pulse dambudziko. Uyezve, kutaridzika kwekuona pa 1550 nm ndeye 10%, uye mukana we-post-pulse wakaderedzwa kusvika pasi pe1%. Yechipiri ndeyekuziva nekukurumidza kudzima uye kudzoreredza nekudzora mwero weiyo bias voltage. Sezvo zvisingabvi pamhinduro yekudzora kweavalanche pulse, nguva yekunonoka yekudzima inoderedzwa zvakanyanya uye kugona kwekuona kwe detector kunovandudzwa. Semuenzaniso, LC Comandar et al shandisa iyo gated mode. Iyo gated single-photon detector yakavakirwa paInGaAs/InPAPD yakagadzirirwa. Iyo imwechete-photon yekuona kunyatsoshanda yaive pamusoro pe55% pa1550 nm, uye iyo post-pulse mukana we7% wakawanikwa. Pahwaro uhwu, Yunivhesiti yeSainzi neTekinoroji yekuChina yakagadzira liDAR sisitimu ichishandisa akawanda-modhi faibha panguva imwe chete yakasanganiswa neyemahara-modhi InGaAs APD photodetector single-photon detector. Midziyo yekuedza inoratidzwa muMufananidzo (c) na (d), uye kuonekwa kwemakore akawanda ane hurefu hwemakiromita gumi nemaviri kunowanikwa nekugadzirisa nguva kwe1 s uye kugadziriswa kwepakati kwemamita gumi nemashanu.