LPT-2 Experimental System rau Acousto-Optic Effect

Lus piav qhia luv luv:

Acousto-optic nyhuv sim 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 cov kev sim ua haujlwm, thiab tseem siv rau kev sim kev tshawb fawb ntawm kev sib txuas lus kho qhov muag 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 yog raug rau 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. Yog li ntawd, thaum lub teeb ci dhau los ntawm qhov nruab nrab ntawm lub xub ntiag ntawm ultrasound tsis nyob rau hauv nruab nrab, nws yog diffracted los ntawm nruab nrab ua raws li ib 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 qhov tsis sib haum xeeb hauv cov khoom siv optics, kev sib koom ua ke ntawm acousto-optic kev sib cuam tshuam tuaj yeem tsim los piav qhia ob qho tib si thiab tsis zoo acousto-optic teebmeem. Cov kev sim hauv qhov system no tsuas yog npog cov nyhuv acousto-optic hauv isotropic media.