Holographic gratings yog diffractive optical ntsiab raws li lub hauv paus ntsiab lus ntawm optical coherent superposition, siv kev cuam tshuam ntawm ob lub laser beams los tsim fringes. Lawv tuaj yeem raug tsim los ntawm cov ntaub ntawv photosensitive siv scanning cuam tshuam teb raug technology. Cov thev naus laus zis no suav nrog txheej txheej cov khoom siv photosensitive mus rau cov iav kho qhov muag, ua raws li kev cuam tshuam ntawm laser thiab etching los tsim kev sib kis lossis kev cuam tshuam gratings. Qhov siab tshaj plaws groove ceev ncav cuag 4300 kab / hli, thiab qhov siab tshaj plaws fabrication cheeb tsam yog 1500mm × 420mm. Muab piv rau cov ntawv sau ntawv ib txwm muaj, lawv muaj qhov zoo xws li tsis muaj kab dab, tsis muaj teeb pom kev zoo (10⁻⁴), thiab kev daws teeb meem siab (mus txog tus nqi theoretical ntawm 80% ~ 100%). Lub diffraction efficiency yuav nce mus rau 95% siv ion etching tshuab.
Holographic gratings yog siv dav hauv cov cuab yeej tshuaj ntsuam spectroscopic, astronomical telescopes, lasers, optical kev sib txuas lus, thiab inertial confinement fusion, nrog rau cov ntawv siv xws li "Xihe" satellite, AR-HUD systems, thiab AR tsom iav rau cov chaw tshwj xeeb.
