LPT-2 Experimental System rau Acousto-Optic Effect

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Acousto-optic effect thwmsim yog ib tiam tshiab ntawm kev sim lub cev nyob rau hauv Cov Tsev Kawm Ntawv Qib Siab thiab cov tsev kawm qib siab, yog siv los kawm txog cov txheej txheem ntawm lub cev hluav taws xob thiab lub teeb pom kev sib cuam tshuam hauv kev sim physics thiab lwm yam kev sim ua haujlwm, thiab tseem siv rau kev sim kev tshawb fawb ntawm optical. kev sib txuas lus thiab cov ntaub ntawv kho qhov muag.Nws tuaj yeem pom pom los ntawm digital ob chav oscilloscope (Optional).

Thaum ultrasound nthwv dej mus rau hauv ib qho nruab nrab, qhov nruab nrab yuav raug elastic strain nrog lub sij hawm hloov nyob rau hauv lub sij hawm thiab qhov chaw, ua rau ib tug zoo xws li lub sij hawm hloov nyob rau hauv lub refractive index ntawm nruab nrab.Raws li qhov tshwm sim, thaum lub teeb ci dhau los ntawm qhov nruab nrab nyob rau hauv lub xub ntiag ntawm ultrasound tsis nyob rau hauv nruab nrab, nws yog disfracted los ntawm nruab nrab ua raws li ib tug theem grating.Qhov no yog qhov yooj yim txoj kev xav ntawm acousto-optic nyhuv.

Cov nyhuv acousto-optic tau muab faib ua cov nyhuv acousto-optic ib txwm thiab anomalous acousto-optic nyhuv.Nyob rau hauv ib qho nruab nrab isotropic, lub dav hlau ntawm polarization ntawm qhov teeb meem teeb meem tsis hloov los ntawm kev sib cuam tshuam acousto-optic (hu ua ib txwm muaj acousto-optic nyhuv);Nyob rau hauv ib qho anisotropic nruab nrab, lub dav hlau ntawm polarization ntawm qhov teeb meem teeb meem yog hloov los ntawm acousto-optic kev sib cuam tshuam (hu ua anomalous acousto-optic nyhuv).Cov nyhuv acousto-optic tsis zoo muab lub hauv paus tseem ceeb rau kev tsim cov acousto-optic deflectors thiab tunable acousto-optic lim.Tsis zoo li cov nyhuv acousto-optic ib txwm, cov nyhuv anomalous acousto-optic tsis tuaj yeem piav qhia los ntawm Raman-Nath diffraction.Txawm li cas los xij, los ntawm kev siv cov ntsiab lus sib cuam tshuam xws li lub zog sib piv thiab tsis sib haum xeeb hauv cov khoom siv kho qhov muag tsis sib xws, kev sib koom ua ke ntawm acousto-optic kev sib cuam tshuam tuaj yeem tsim los piav qhia ob qho tib si ib txwm thiab tsis zoo acousto-optic teebmeem.Cov kev sim hauv qhov system no tsuas yog npog cov nyhuv acousto-optic hauv isotropic media.