Isingeniso, Photon Counting Type Linear Avalanche PhotoDetector

Isingeniso, uhlobo lokubala lwe-PhotonI-Valaar Avalanche PhotoDepector

I-Photon Count Technology ingakhulisa ngokuphelele i-Photon Signal ukunqoba umsindo wokufunda kwamadivayisi we-elekthronikhi, bese uqopha inombolo ye-Photoction okukhishwe yi-detector esikhathini esithile sokudla okukhanyayo ngaphansi kwenani le-photon metres. Ukuze ubone ukutholwa okukhanyayo okubuthakathaka kakhulu, izinhlobo eziningi zezinsimbi ezinekhono lokutholwa kwe-Photon zifundelwe emazweni ahlukahlukene. I-avalanche ye-avalanche Photodiode (I-PhotoDector ye-APD) iyithuluzi elisebenzisa i-Photoelectric Effect Ithola Lokukhanya Kwangaphakathi Kwezimpawu Zokukhanya. Uma kuqhathaniswa namadivayisi we-vacuum, amadivaysi e-solid-state anezinzuzo ezisobala kwijubane lokuphendula, ukubala kwamandla, ukusetshenziselwa ivolumu kanye nososayensi sebekwenzeni ucwaningo olususelwa kubuchwepheshe obuqinile be-APD photon

Idivayisi ye-PhotoDector ye-APDInemodi ye-juiger (GM) nemodi eqondile (LM) izindlela ezimbili zokusebenza, i-APD Photon Counting Magang Finaling Technology ikakhulukazi isebenzisa i-Geger Mode APD APD. Amadivayisi we-Geger Mode APD anokuzwela okuphezulu ezingeni elithile le-photon elilodwa nesivinini sokuphendula esiphezulu samashumi ama-nanoseconds ukuthola ukunemba kwesikhathi esiphakeme. Kodwa-ke, i-Geger Mode APD inezinkinga ezithile ezifana nesikhathi sokuthola umtshina, ukusebenza okuphansi kokutholwa, ukulungiswa kwendawo enkulu, ngakho-ke kunzima ukwandisa ukuphikisana okuphezulu kanye nezinga eliphansi le-alamu yamanga. Ama-Photon Counters asuselwa kumadivayisi asezingeni eliphakeme aphezulu we-HGCDTE APD asebenza kumodi eqondile, awunawo umkhawulo wesikhathi se-crosstalk, awudingi uhla olushukumisayo, futhi angahle alungiswe amandla okuphendula, futhi angahle asebenze kahle ngokuzimela ukuze usebenze kahle futhi kube khona amanani okubala amanga. Ivula inkambu entsha yesicelo se-infrared Photon CountIng imaging, iyindlela ebalulekile yentuthuko yamadivayisi wokubala we-Photon, futhi inamathemba wohlelo lokusebenza olubanzi ekubukeni kwezinkanyezi, ukuxhumana kwamahhala kwesikhala, ukulandelela okusebenzayo, ukulandelwa kwe-fringe, ukulandelwa kwe-fringe, ukulandelwa kwe-fringe, ukulandelwa kwe-fringe.

Isimiso sokubala i-Photon kumadivayisi we-HGCDTE APD

Amadivayisi we-PhotoDector asuselwa ezintweni ze-HGCDTE angamboza izinhlobonhlobo zama-wavelength, kanti ama-coefficients e-eonization ama-elektroni kanye nezimbobo ahluke kakhulu (bheka umfanekiso 1 (a)). Babonisa indlela yokuphindaphinda yenethiwekhi eyodwa ngaphakathi kwe-wave-off-off wavelength ka-1.3 ~ 11 μm. Cishe akukho msindo owengeziwe (uma kuqhathaniswa nesici somsindo ngokweqile fsi ~ 2-3 samadivayisi we-SI APD ne-Fii-VI-Avalanche PhotoDepector.

Fig. 1 (a) ubudlelwano phakathi kwesilinganiso se-couffied yethonya se-Mercury Cadmium Telloride nengxenye ye-X ye-CD; .

I-Photon Counting Technology ubuchwepheshe obusha obungakhipha amasiginali we-Optical adambisa umsindo we-thermal ngokuxazulula ama-photoelectron pulses akhiqizwa a a a a a a a a a a a a a a a a a a a a aluI-PhotoDETETETETECETETETngemuva kokuthola isithombe esisodwa. Njengoba isiginali esikhanyayo esiphansi ihlakazeka kakhulu kwisizinda sesikhathi, okukhishwa kwesiginali kagesi ngumtshina nakho kwemvelo futhi kuncipha. Ngokusho kwalesi sici sokukhanya esibuthakathaka, ukukhulisa i-Pulse, ukucwaswa kwe-pulse kanye namasu wokubala wedijithali kuvame ukusetshenziselwa ukuthola ukukhanya okubuthakathaka kakhulu. Ubuchwepheshe bokubala be-Photon banamuhla bunezinzuzo eziningi, njengokulinganisa okuphezulu kwesiginali-to-umsindo, ukunemba okuphezulu, ukunemba okuhle, futhi kungakhipha idatha yesikhathi esikhangethwe, futhi kungahle kube khona idatha kwikhompyutha yokuhlaziywa okulandelayo kokuhlaziywa okulandelayo. Njengamanje, uhlelo lokubala i-Photon lusetshenziswe kabanzi emkhakheni wezilinganiso zezimboni kanye nokutholwa okukhanyayo, okufana nokutholwa kwe-nonlinear, ukulinganisa okuphezulu kwesinqumo, okuhlobene nokutholwa kokutholwa nokutholwa kwezimpawu zokukhanya ezibuthakathaka. I-Mercury Cadmium Turreride Avalanche PhotoDetector icishe ibe nomsindo owengeziwe, njengoba ukwanda kokuthola amandla, isilinganiselo se-Signal-to-umsindo asibolile, futhi asikho isikhathi esifile kanye nokuqondisa okubalulekile kwentuthuko yamadivayisi wokubala we-Photon ngokuzayo.