Regarding MgO: LN Crystal, the refractive index of an optical medium is altered by the presence of sound, this is called acousto-optic effect which can be used in many devices include optical modulators, q switches, deflectors, filters, frequency shifters and spectrum analyzers.
Ngokuphathelene neMGO: LN Crystal, inkomba yokubonisa ye-optical medium ishintshwa ngokuba khona komsindo, lokhu kubizwa ngokuthi yi-acousto-optic effect engasetshenziswa kumadivayisi amaningi kufaka phakathi ama-modulators we-optical, ama-q switch, ama-deflectors, izihlungi, ama-frequency shifters kanye ne-spectrum abahlaziyi.