Menene na'urar gano hoto ta PIN

Menenena'urar gano hoto ta PIN

Na'urar gano hoto (photodetector) hakika na'urar gano hoto ce mai matuƙar tasiri.na'urar daukar hoto ta semiconductorwanda ke canza haske zuwa wutar lantarki ta hanyar amfani da tasirin photoelectric. Babban kayan aikinsa shine photodiode (PD photodetector). Nau'in da aka fi sani shine mahaɗin PN, jagororin lantarki masu dacewa da harsashin bututu. Yana da ikon sarrafawa ɗaya-ɗaya. Lokacin da aka yi amfani da ƙarfin lantarki na gaba, diode yana gudana; lokacin da aka yi amfani da ƙarfin lantarki na baya, diode ɗin yana yankewa. PD photodetector yayi kama da diode semiconductor gama gari, sai dai cewana'urar gano hoto ta PDYana aiki a ƙarƙashin ƙarfin lantarki na baya kuma ana iya fallasa shi. Ana naɗe shi ta hanyar taga ko haɗin fiber na gani, wanda ke ba da damar haske ya isa ga ɓangaren na'urar mai saurin ɗaukar hoto.

A halin yanzu, abin da aka fi amfani da shi a cikin na'urar gano hoto ta PD ba mahaɗin PN ba ne amma mahaɗin PIN. Idan aka kwatanta da mahaɗin PN, mahaɗin PIN yana da ƙarin Layer I a tsakiya. Layin I wani Layer ne na semiconductor na nau'in N tare da ƙarancin yawan doping. Saboda semiconductor ne na ciki wanda ke da ƙarancin yawan doping, ana kiransa layin I. Layin I yana da kauri kaɗan kuma kusan ya mamaye duk yankin depletion. Yawancin photons da suka faru suna shawagi a cikin layin I kuma suna samar da nau'ikan electron-hole (masu ɗaukar hoto). A ɓangarorin biyu na layin I akwai semiconductor na nau'in P da N tare da yawan doping mai yawa. Layin P da N suna da sirara sosai, suna shan ƙaramin rabo na photons da suka faru kuma suna samar da ƙaramin adadin masu ɗaukar hoto. Wannan tsari na iya hanzarta saurin amsawar tasirin photoelectric sosai. Duk da haka, yankin depletion mai faɗi sosai zai tsawaita lokacin da masu ɗaukar hoto ke shawagi a yankin depletion, wanda maimakon haka yana haifar da jinkirin amsawa. Saboda haka, ya kamata a zaɓi faɗin yankin depletion da kyau. Ana iya canza saurin amsawar diode na haɗin PIN ta hanyar sarrafa faɗin yankin raguwa.

Na'urar gano hasken PIN na'urar gano hasken rana ce mai inganci sosai, tana da kyakkyawan ƙudurin makamashi da ingancin gano shi. Tana iya auna nau'ikan makamashin radiation daban-daban daidai kuma tana cimma saurin amsawa da aiki mai ƙarfi.na'urar gano hotoshine a mayar da siginar raƙuman haske guda biyu bayan bugun mita zuwa siginar lantarki, a kawar da ƙarin hayaniyar ƙarfin hasken oscillator na gida, a haɓaka siginar mitar matsakaici, da kuma inganta rabon sigina zuwa hayaniya. Masu gano hoto na PIN suna da tsari mai sauƙi, sauƙin amfani, babban jin daɗi, babban riba, babban bandwidth, ƙarancin hayaniya, da ƙarfin hana tsangwama. Suna iya aiki da kyau a cikin yanayi daban-daban masu wahala kuma galibi ana amfani da su a cikin gano siginar lidar na auna iska.