Lub holographic grating yog ib qho khoom siv kho qhov muag uas tsim los ntawm kev yees duab holographic. Cov txheej txheem no yog ua raws li lub hauv paus ntsiab lus ntawm coherent superposition ntawm lub teeb. Los ntawm kev kho cov theem nyuaj ntawm ob lub teeb nthwv dej, lub ncov thiab cov troughs ntawm ob lub nthwv dej tau raug sib dhos ua ke, ua kom muaj qhov sib txawv ntawm qhov sib txawv siab thiab ua tiav cov qauv siab -precision grating.
Ib txheej ntawm photoresist los yog lwm yam khoom siv photosensitive ntawm ib lub thickness yog uniformly coated mus rau ib tug ca optical substrate.
Ob coherent beams yog emissions siv ib tug laser, tsim ib yam kev cuam tshuam fringes nyob rau hauv txheej txheej, nthuav tawm cov khoom siv photosensitive. Tom qab ntawd cov chaw raug tshem tawm los ntawm kev siv cov kuab tshuaj tshwj xeeb, tawm hauv cov qauv cuam tshuam ntawm txheej txheej, tsim kom muaj kev sib kis diffraction grating. Yog hais tias ib qho aluminium zaj duab xis tso rau sab nraum qab ntawm iav substrate, nws tuaj yeem hloov mus rau hauv qhov sib txawv ntawm qhov sib txawv, ua tiav qhov kev xav tau zoo thiab qhov sib txawv ntawm qhov teeb meem teeb meem.
