Ekip Science Island la te fè pwogrè nan teknoloji k-switching lazè mitan-enfrawouj ki gen gwo efikasite ityòm niobat.
Dènyèman, gwoup rechèch Jiang Haihe, yon chèchè nan laboratwa Teknoloji Lazè Medikal nan Enstiti Sante, Hefei Research Institute nan Akademi Chinwa Syans, kolabore ak Lachin Elektwonik Teknoloji Group, e li te fè pwogrè enpòtan nan rechèch acousto- optik Q-chanje teknoloji nan mitan-enfrawouj bann: la pou premye fwa, ityòm niobate (LiNbO3) kristal yo te reyalize. Bouton akousto-optik ak pwodiksyon Q-switched wo-efikasite yo nan 2.79 μm Er, Cr: YSGG lazè. Rezilta ki enpòtan yo te pibliye nan jounal optik entènasyonal Optics Letters.
Lithium niobate crystal is a traditional multifunctional crystal. In recent years, lithium niobate thin-film photonic devices with extremely low optical loss and rich photoelectric functions have developed rapidly. Lithium niobate is expected to replace silicon materials in the field of integrated photonics. Problems provide solutions. Since the discovery of lithium niobate crystal in 1937, although it has good acousto-optic properties and has been used as a transducer material for a long time, it has not been able to realize the laser acousto-optic Q-switching switch of bulk crystals. This research has realized the homogeneity and integration of the acousto-optic medium and the transducer, which can simplify the manufacturing process, reduce the auxiliary cost, and also reduce the loss of ultrasonic energy, so that the diffraction efficiency of the lithium niobate Q-switch can reach 57%. And the lithium niobate crystal has a high damage resistance threshold (>200 MW/cm2).
