Hanyoyi biyu na aiki na acousto-optic modulator

Yanayin aiki guda biyumai daidaita acousto-optic
Mai daidaita sauti da na gani (acousto-optical modulator)Mai daidaita AOM) wata na'ura ce da za ta iya daidaita ƙarfin ko karkatar da kusurwar hasken laser ba tare da buƙatar wasu sassan motsi na macroscopic ba. Babban ƙa'idarsa mai sauƙi ce: ta motsa raƙuman sauti a cikin matsakaici mai haske, yi amfani da canje-canjen lokaci-lokaci da raƙuman sauti ke haifarwa don samar da grating na diffraction, kuma ta haka ne za a canza hasken da ke ratsa ta.
1. Bayan shiga gundumar Prague, AOM modulator yana da amfani guda biyu na asali:
1.1 Daidaitawar ƙarfi: gyara mitar RF da canza ƙarfin RF. Canjin ƙarfin sauti yana haifar da canji a cikin zurfin grating, kuma ƙarfin hasken da aka rarraba a tsari na farko yana canzawa daidai da haka. Mafi sauƙin daidaitawar ƙarfi shine maɓalli: lokacin da aka kunna RF, wurin haske na matakin farko yana bayyana; RF yana kashe, wurin haske na matakin farko yana ɓacewa.
1.2 Juyawar haske/dubawa: canza mitar RF. Sauyin mitar yana sa tsawon raƙuman sauti ya canza, kuma yawan juyawar yana canzawa daidai da haka, wanda ke haifar da canji a kusurwar diffraction. Hasken laser zai karkata a cikin ƙaramin kewayon kusurwa. Yin aiki a cikin wannan yanayin yawanci ya ƙunshi kiran na'urar hangen nesa (AOD).
Ana iya fahimtar ainihin na'urar daidaita haske ta acousto-optic a matsayin na'urar rarraba haske mai shirye-shirye, wacce ke amfani da siginar mitar rediyo don sarrafa raƙuman ultrasonic, raƙuman ultrasonic don sarrafa sigogin grating, sannan kuma gratings don sarrafa alkibla da ƙarfin laser. Ba shi da sassan motsi na macroscopic kuma yana iya kammala sauyawar haske, rage haske, da ƙananan na'urorin duba kusurwa a cikin manyan gudu. Duk da cewa farashin yana da yawa kuma kewayon karkacewa yana da iyaka, a halin yanzu babu wani mafita mafi kyau akan hanyar sarrafa hasken mai saurin gaske.
Fa'idodin AOM modulator sune saurin gudu, babu lalacewa, da kuma daidaito mai yawa, amma bai maye gurbin mafita na injiniya gaba ɗaya ba. Dalilin yana da matuƙar kai tsaye: tsarin yana da rikitarwa, farashin yana da yawa, kusurwar karkatarwa ƙarami ne ƙwarai, kuma ingancin gabaɗaya ya yi ƙasa da tsarin injina kamar madubai da injina. Don haka a cikin yanayi inda buƙatun gudu ba su da yawa, karkatarwar injiniya kusan koyaushe shine mafi kyawun zaɓi. Sai lokacin da saurin daidaitawa ya kai MHz ko sama da haka kuma tsarin injin ba zai iya ci gaba ba, za a iya amfani da shi ta hanyar amfani da na'urar.na'urorin acousto-opticshakika ba za a iya maye gurbinsa ba.