Dongosolo Loyesera la LPT-2 la Mphamvu ya Acousto-Optic

Kufotokozera Kwachidule:

Kuyesera kwa Acousto-optic ndi chida chatsopano choyesera chakuthupi m'makoleji ndi mayunivesite, chomwe chimagwiritsidwa ntchito pophunzira njira zakuthupi zolumikizirana zamagetsi ndi kuwala m'mayesero oyambira a fizikisi ndi zoyeserera zina zokhudzana nazo, komanso chimagwiranso ntchito pa kafukufuku woyesera wa kulumikizana kwa kuwala ndi kukonza chidziwitso cha kuwala. Chikhoza kuwonetsedwa bwino ndi digito double oscilloscope (Zosankha).

Pamene mafunde a ultrasound akuyenda mu sing'anga, sing'angayo imavutika ndi kusinthasintha kwa nthawi ndi malo, zomwe zimapangitsa kusintha kofanana kwa nthawi mu refractive index ya sing'angayo. Zotsatira zake, kuwala kukadutsa mu sing'anga pamaso pa mafunde a ultrasound mu sing'angayo, kumasokonezedwa ndi sing'angayo yomwe imagwira ntchito ngati phase grating. Iyi ndi mfundo yoyambira ya acousto-optic effect.

Mphamvu ya Acousto-optic imagawidwa m'magulu awiri: mphamvu ya acousto-optic yachibadwa ndi mphamvu ya acousto-optic yachilendo. Mu njira ya isotropic, njira ya polarization ya kuwala kwa chochitika siisinthidwa ndi acousto-optic interaction (yotchedwa mphamvu ya acousto-optic yachibadwa); mu njira ya anisotropic, njira ya polarization ya kuwala kwa chochitika imasinthidwa ndi njira ya acousto-optic interaction (yotchedwa mphamvu ya acousto-optic yachilendo). Mphamvu ya acousto-optic yachilendo imapereka maziko ofunikira opangira ma deflector apamwamba a acousto-optic ndi ma filters a acousto-optic osinthika. Mosiyana ndi mphamvu ya acousto-optic yachibadwa, mphamvu ya acousto-optic yachilendo singathe kufotokozedwa ndi Raman-Nath diffraction. Komabe, pogwiritsa ntchito mfundo za parametric interaction monga momentum matching ndi mismatching mu nonlinear optics, chiphunzitso chogwirizana cha acousto-optic interaction chingakhazikitsidwe kuti chifotokoze zotsatira za acousto-optic yachibadwa ndi yosazolowereka. Kuyesera komwe kumachitika mu dongosololi kumangokhudza mphamvu ya acousto-optic yachibadwa mu isotropic media.