Mai daidaita Acousto-optic: Aikace-aikace a cikin kabad ɗin atom mai sanyi
A matsayin babban ɓangaren haɗin laser na fiber-fiber a cikin akwatin zarra mai sanyi,na'urar daidaita sauti ta fiber optic acousto-opticzai samar da laser mai ƙarfi mai daidaita mitar wutar lantarki ga kabad ɗin atom mai sanyi. Atoms za su sha photons tare da mitar resonant na v1. Tunda saurin photons da atoms akasin haka ne, saurin atoms zai ragu bayan shan photons, ta haka ne za a cimma manufar sanyaya atoms. Atoms masu sanyaya laser, tare da fa'idodin su kamar dogon lokacin bincike, kawar da canjin mitar Doppler da canjin mitar da karo ke haifarwa, da kuma rashin haɗin filin hasken ganowa, yana inganta daidaitaccen ikon aunawa na atom kuma ana iya amfani da shi sosai a cikin agogon atom mai sanyi, ma'aunin interferometer na atom mai sanyi, da kewayawar atom mai sanyi, da sauran fannoni.
Cikin fiber optic modulator AOM acousto-optic fiber galibi ya ƙunshi kristal na acousto-optic da kuma fiber collimator, da sauransu. Siginar da aka daidaita tana aiki akan piezoelectric transducer a cikin nau'in siginar lantarki (modulation amplitude, phase modulation ko mita modulation). Ta hanyar canza halayen shigarwa kamar mita da girma na siginar da aka daidaita shigarwa, ana cimma sauye-sauyen mita da girma na laser shigarwa. Piezoelectric transducer yana canza siginar lantarki zuwa siginar ultrasonic waɗanda suka bambanta a cikin tsari ɗaya saboda tasirin piezoelectric kuma yana yaɗa su a cikin matsakaiciyar acousto-optic. Bayan ma'aunin refractive na matsakaiciyar acousto-optic yana canzawa lokaci-lokaci, ana samar da grating na refractive index grating. Lokacin da laser ya ratsa ta fiber collimator kuma ya shiga matsakaiciyar acousto-optic, diffraction yana faruwa. Mitar hasken da aka diffracted yana mamaye mitar ultrasonic akan mitar laser shigarwa ta asali. Daidaita matsayin fiber collimator don sa fiber optic modulator acoust-optic modulator yayi aiki a cikin mafi kyawun yanayi. A wannan lokacin, kusurwar hasken da ya faru a lokacin da abin ya faru ya kamata ya cika yanayin diffraction na Bragg, kuma yanayin diffraction ya kamata ya zama diffraction na Bragg. A wannan lokacin, kusan dukkan kuzarin hasken da ya faru ana canja shi zuwa hasken diffraction na farko.
Ana amfani da na'urar AOM acouto-optic modulator ta farko a ƙarshen gaban na'urar amplifier ta tsarin, tana daidaita hasken shigarwa mai ci gaba daga ƙarshen gaba tare da bugun gani. Sai bugun gani da aka daidaita ya shiga cikin na'urar amplifier ta tsarin don ƙara ƙarfin kuzari. Na biyuMai daidaita yanayin gani na AOM Acupo-opticalAna amfani da shi a ƙarshen bayan amplifier na gani, kuma aikinsa shine ware hayaniyar tushe na siginar bugun gani da tsarin ya ƙara. Gefen gaba da baya na fitowar bugun haske ta hanyar AOM acouto-optic modulator na farko suna rarraba daidai gwargwado. Bayan shigar da amplifier na gani, saboda karuwar amplifier don gefen jagorar bugun jini ya fi na gefen da ke biye da bugun jini, bugun hasken da aka ƙara zai nuna wani lamari na karkacewar yanayin waveform inda makamashi ya taru a gefen jagora, kamar yadda aka nuna a Hoto na 3. Don ba da damar tsarin ya sami bugun gani tare da rarrabawa daidai gwargwado a gefun gaba da baya, AOM acouto-optic modulator na farko yana buƙatar ɗaukar daidaitawar analog. Sashin kula da tsarin yana daidaita gefen tasowa na AOM acouto-optic modulator na farko don ƙara gefen tasowa na bugun gani na acoust-optic module kuma ya rama rashin daidaituwa na amplifier na gani a gefun gaba da baya na bugun.
Amplifier na gani na tsarin ba wai kawai yana ƙara siginar bugun gani mai amfani ba ne, har ma yana ƙara hayaniyar tushe na jerin bugun. Don cimma babban rabon sigina-zuwa-hayaniya na tsarin, fasalin babban rabon ƙarewa na zaren gani.Mai daidaita AOMAna amfani da shi don danne hayaniyar tushe a ƙarshen amplifier, yana tabbatar da cewa bugun siginar tsarin zai iya wucewa ta yadda ya kamata har zuwa mafi girman matakin yayin da yake hana hayaniyar tushe shiga rufewar acousto-optic na lokaci (ƙofar bugun yanki na lokaci). An ɗauki hanyar daidaitawa ta dijital, kuma ana amfani da siginar matakin TTL don sarrafa kunnawa da kashe na'urar acoust-optic don tabbatar da cewa gefen hauhawar bugun yanki na lokaci na na'urar acoust-optic shine lokacin tashi da aka tsara na samfurin (watau, mafi ƙarancin lokacin tashi da samfurin zai iya samu), kuma faɗin bugun ya dogara da faɗin bugun siginar matakin TTL na tsarin.
Lokacin Saƙo: Yuli-01-2025