Tsarin Gwaji na LPT-2 don Tasirin Acousto-Optic

Takaitaccen Bayani:

Gwajin tasirin Acousto-optic wani sabon ƙarni ne na kayan aikin gwaji na zahiri a kwalejoji da jami'o'i, ana amfani da shi don nazarin tsarin jiki na hulɗar filin lantarki da filin haske a cikin gwaje-gwajen kimiyyar lissafi na asali da gwaje-gwajen ƙwararru masu alaƙa, kuma yana aiki ga binciken gwaji na sadarwa na gani da sarrafa bayanai na gani. Ana iya nuna shi ta hanyar amfani da oscilloscope na dijital sau biyu (Zaɓi).

Lokacin da raƙuman duban dan tayi ke tafiya a cikin matsakaici, matsakaiciyar tana fuskantar matsin lamba mai laushi tare da canje-canje na lokaci-lokaci a cikin lokaci da sarari, wanda ke haifar da irin wannan canjin lokaci-lokaci a cikin ma'aunin haske na matsakaiciyar. Sakamakon haka, lokacin da hasken haske ya ratsa ta matsakaici a gaban raƙuman duban dan tayi a cikin matsakaiciyar, matsakaiciyar tana aiki a matsayin grating na lokaci. Wannan shine ka'idar asali ta tasirin acousto-optic.

An rarraba tasirin Acousto-optic zuwa tasirin acousto-optic na yau da kullun da tasirin acousto-optic na rashin daidaituwa. A cikin matsakaici na isotropic, matakin polarization na hasken abin da ya faru ba ya canzawa ta hanyar hulɗar acousto-optic (wanda ake kira tasirin acousto-optic na yau da kullun); a cikin matsakaici na anisotropic, matakin polarization na hasken abin da ya faru yana canzawa ta hanyar hulɗar acousto-optic (wanda ake kira tasirin acousto-optic na rashin daidaituwa). Tasirin acousto-optic na rashin daidaituwa yana ba da babban tushe don ƙera deflectors na acousto-optic na ci gaba da matattara na acousto-optic da za a iya gyarawa. Ba kamar tasirin acousto-optic na yau da kullun ba, ba za a iya bayyana tasirin acousto-optic na rashin daidaituwa ta hanyar diffraction na Raman-Nath ba. Duk da haka, ta hanyar amfani da ra'ayoyin hulɗar parametric kamar daidaitawar motsi da rashin daidaituwa a cikin tabarau marasa layi, ana iya kafa ka'idar haɗin kai ta hulɗar acousto-optic don bayyana tasirin acousto-optic na al'ada da na rashin daidaituwa. Gwaje-gwajen da aka yi a cikin wannan tsarin sun shafi tasirin acousto-optic na yau da kullun ne kawai a cikin kafofin watsa labarai na isotropic.