Txoj cai ua haujlwm ntawm acousto-optic modulator

1. Txoj cai ua haujlwm ntawmacousto-optic modulator
Lub hauv paus ntawm lub acousto-optic modulator (AOM modulator)yog qhov cuam tshuam acousto-optic. Nws cov qauv yooj yim suav nrog cov siv lead ua acousto-optic, transducers, cov khoom siv nqus, thiab cov tsav tsheb. Cov teeb liab hluav taws xob tso tawm los ntawm tus tsav tsheb raug hloov mus ua cov nthwv dej ultrasonic los ntawm lub transducer. Thaum cov nthwv dej ultrasonic kis mus rau hauv cov khoom siv acousto-optic, lawv ua rau muaj kev hloov pauv tsis tu ncua hauv qhov nruab nrab, tsim cov qauv zoo ib yam li cov grating theem. Thaum lub teeb hla dhau cov khoom siv no, diffraction tshwm sim, ua tiav kev hloov pauv ntawm cov nthwv dej optical carrier. Muaj ob hom diffraction hom: Raman Ness diffraction thiab Bragg diffraction. Tus modulator AOM feem ntau siv ua haujlwm hauv Bragg diffraction hom, qhov twg lub teeb tshwm sim yog tshwm sim ntawm lub kaum sab xis Bragg tshwj xeeb thiab lub teeb tso zis muaj lub teeb tsis muaj kev txiav txim xoom thiab lub teeb diffraction thawj zaug nrog lub kaum sab xis deflection.
2. Cov txheej txheem tseem ceeb ntawm acousto-optic modulator
2.1 Kev ua haujlwm ntawm diffraction thiab kev poob modulation: ntsuas lub peev xwm ntawm lub cuab yeej los hloov lub teeb pom kev mus rau hauv thawj qib diffracted lub teeb thiab qhov kev poob optical uas nrog.
2.2 Lub kaum sab xis Bragg: Lub kaum sab xis tshwj xeeb uas ua tiav qhov kev ua haujlwm zoo tshaj plaws ntawm diffraction, uas muaj feem cuam tshuam rau qhov ntev ntawm laser, zaus xov tooj cua, thiab qhov ceev ntawm lub suab hauv lub siv lead ua.
2.3 Lub zog RF zoo tshaj plaws: piv txwv li lub zog saturation, lub zog tsav tsheb RF xav tau kom ua tiav qhov siab tshaj plaws diffraction efficiency. Cov mis xam tshwj xeeb tau muab rau hauv tsab xov xwm.
2.4 Kev hloov kho lub kaum sab xis ntawm qhov sib txawv: Txhawm rau kom ntseeg tau tias muaj kev ua tau zoo tshaj plaws, lub kaum sab xis ntawm qhov teeb meem laser yuav tsum phim cov yam ntxwv ntawm cov khoom siv acousto-optic.
2.5 Qhov ceev ntawm kev hloov pauv: feem ntau yog sawv cev los ntawm lub sijhawm sawv ntawm lub teeb, nyob ntawm lub sijhawm kis ntawm cov suab nthwv dej los ntawm lub teeb, thiab muaj feem cuam tshuam rau lub cheeb ntawm lub teeb thiab qhov ceev ntawm lub suab.
3. Cov ntawv thov tseem ceeb ntawm cov acousto-optic modulators
Tsib daim ntawv thov tseem ceeb ntawmkev siv tshuab acousto-opticyog:
3.1 Acousto optic Q-switch: muab tso rau hauv lub laser qhov, nws tsim cov laser pulsed fais fab siab tshaj plaws los ntawm kev hloov kho sai sai ntawm qhov poob ntawm qhov.
3.2 Acousto optic modulator/switch: siv rau kev hloov kho qhov muaj zog lossis kev tswj hwm sai ntawm laser sab nraum lub laser qhov, thiab tuaj yeem siv ua lub shutter lossis variable attenuator.
3.3 Acoustic optic deflector: Los ntawm kev hloov pauv zaus xov tooj cua kom deflect lub teeb laser, kev luam theej duab sai sai tau ua tiav, tsim nyog rau kev nkag mus rau random lossis kev luam theej duab tas mus li.
3.4 Acousto optic zaus shifter: tsim tshwj xeeb los txav lub laser zaus nce lossis nqis, thiab tuaj yeem ua cascaded kom ua tiav ntau zaus hloov pauv sib xyaw ua ke.
3.5 Acousto optic Adjustable Filter: Lub tshuab lim dej kho qhov muag uas kho tau raws li qhov xav tau ntawm lub cev uas tuaj yeem xaiv cov wavelengths tshwj xeeb los ntawm ntau lub spectrum sai thiab dynamically.lub teeb ci.