Imashini ipima fotoni imwe ya InGaAs

Ifotoni imweInGaAs foto detector

Bitewe n'iterambere ryihuse rya LiDAR,gupima urumuriIkoranabuhanga n'ikoranabuhanga rikoreshwa mu gupima ibinyabiziga mu buryo bwikora nabyo bifite ibisabwa byinshi, ubushobozi bwo kumenya no kumenya igihe by'icyuma gipima urumuri gikoreshwa mu ikoranabuhanga risanzwe rikoresha urumuri ruto ntabwo bishobora guhaza ibyo bikenewe nyabyo. Foton imwe ni yo ntoya cyane mu ikoranabuhanga ry'urumuri, kandi icyuma gipima urumuri gifite ubushobozi bwo kubona urumuri ruto ni cyo gikoresho cya nyuma cyo kubona urumuri ruto. Ugereranyije na InGaAsAPD ipima foto, ibikoresho bipima fotoni imwe bishingiye kuri InGaAs APD bifite umuvuduko wo hejuru wo gusubiza, ubushobozi bwo kumva no gukora neza. Kubwibyo, ubushakashatsi butandukanye kuri ibyo bikoresho bipima fotoni imwe bya IN-GAAS APD byakozwe mu gihugu no mu mahanga.

Abashakashatsi bo muri Kaminuza ya Milan mu Butaliyani babanje gukora icyitegererezo cy’ibice bibiri kugira ngo bigane imyitwarire y’igihe gito ya fotoni imweicyuma gipima imiterere y'inkangumu 1997, kandi yatanze ibisubizo byo kwigana imibare ku miterere y'igihe gito y'icyuma kimwe gipima inkombe cya fotoni. Hanyuma mu 2006, abashakashatsi bakoresheje MOCVD mu gutegura ishusho y'imiterere y'ikirereInGaAs APD ipima amashushoImashini ipima fotoni imwe, yongereye ubushobozi bwo kubona fotoni imwe kugeza kuri 10% binyuze mu kugabanya urwego rugaragaza urumuri no kongera ingufu z'amashanyarazi ku buryo butandukanye. Mu 2014, binyuze mu kunoza imiterere y'ikwirakwizwa rya zinc no kunoza imiterere ihagaze, imashini ipima fotoni imwe ifite ubushobozi bwo kubona fotoni bwinshi, kugeza kuri 30%, kandi igera ku gipimo cya timing jitter cya 87 ps. Mu 2016, SANZARO M n'abandi bahuje imashini ipima fotoni imwe ya InGaAs APD hamwe na resistor integrated monolithic, bashushanya module ntoya yo kubara fotoni imwe ishingiye kuri iyo mashini, kandi batanga uburyo bwo kuzimya filime bwa hybrid bwagabanyije cyane imbaraga z'inkangu, bityo bigabanyiriza post-pulse na optical crosstalk, kandi bigabanyiriza timing jitter kugeza kuri 70 ps. Muri icyo gihe, andi matsinda y'ubushakashatsi nayo yakoze ubushakashatsi kuri InGaAs APDicyuma gipima fotoImashini ipima fotoni imwe. Urugero, Princeton Lightwave yakoze imashini ipima fotoni imwe ya InGaAs/InPAPD ifite imiterere isanzwe kandi iyishyira mu bucuruzi. Ikigo cya Shanghai Institute of Technical Physics cyagerageje imikorere ya APD photodetector ifite fotoni imwe ikoresheje gukuraho zinc deposits na capacitive balanced gate pulse mode hamwe n'umuvuduko w'umwijima wa 3.6 × 10 ⁻⁴/ns ku muvuduko w'umuvuduko wa 1.5 MHz. Joseph P n'abandi bakoze imiterere ya mesa InGaAs APD photodetector ifite umuvuduko munini, kandi bakoresheje InGaAsP nk'ibikoresho byo gufata kugira ngo babone umuvuduko muto w'umukara nta ngaruka ku mikorere yo kuvumbura.

Uburyo bwo gukora bwa InGaAs APD photodetector single photon detector ni uburyo bwo gukora ku buntu, ni ukuvuga ko APD photodetector igomba kuzimya uruziga rw'inyuma nyuma y'uko habaye isenyuka, hanyuma ikagarura nyuma yo kuzimya igihe runaka. Kugira ngo igabanye ingaruka zo gutinda kuzimya, igabanyijemo ubwoko bubiri: Ubwa mbere ni ugukoresha uruziga rwo kuzimya rudakora cyangwa rukora kugira ngo rugere ku kuzimya, nk'uruziga rwo kuzimya rukoreshwa na R Thew, nibindi. Ishusho (a), (b) ni ishusho yoroshye y'uruziga rwo kugenzura ikoranabuhanga n'uruziga rwo kuzimya rukora hamwe n'isano yarwo na APD photodetector, rwakozwe kugira ngo rukore mu buryo bwo gukora ku gati cyangwa ku bwisanzure, bigabanyije cyane ikibazo cyo gukora nyuma yo kuzimya kitari cyarabonetse mbere. Byongeye kandi, ubushobozi bwo kumenya kuri 1550 nm ni 10%, kandi amahirwe yo kuzimya nyuma yo kuzimya aragabanuka kugeza munsi ya 1%. Iya kabiri ni ugukora kuzimya vuba no kugarura amazi binyuze mu kugenzura urwego rwa voltage ya bias. Kubera ko bidashingiye ku kugenzura uburyo umuvuduko w'inkangu uhagaze, igihe cyo gutinda kuzimya kiragabanuka cyane kandi ubushobozi bwo kumenya imiterere y'imashini ipima imiterere y'izuba burarushaho kwiyongera. Urugero, LC Comandar n'abandi bakoresha uburyo bwo gupima imiterere y'izuba. Hateguwe uburyo bwo kumenya imiterere y'izuba rimwe bushingiye kuri InGaAs/InPAPD. Ubuhanga bwo kumenya imiterere y'izuba rimwe bwari burenga 55% kuri 1550 nm, kandi amahirwe yo kumenya imiterere y'izuba nyuma yo gupima imiterere y'izuba ya 7%. Ni muri urwo rwego, Kaminuza y'Ubumenyi n'Ikoranabuhanga y'Ubushinwa yashyizeho sisitemu ya liDAR ikoresheje fibre y'imiterere myinshi icyarimwe hamwe na detector y'izuba ya InGaAs APD. Ibikoresho by'igerageza bigaragara ku Ishusho (c) na (d), kandi kumenya ibicu by'imiterere myinshi bifite uburebure bwa km 12 bikorwa hakoreshejwe igihe cya 1 s n'igipimo cy'ahantu cya metero 15.