SUPERIOR REAL-TIME HOLOGRAPHIC STORAGE PROPERTIES IN DOPED POTASSIUM-SODIUM STRONTIUM BARIUM NIOBATE CRYSTAL

We demonstrate superior holographic storage performance in a cobalt do ped potassium sodium strontium barium niobate (Co:KNSBN) crystal that possesses a fast response time of 1.4 ms, a large photorefractive sens itivity of 13 x 10(-3) cm(3) J(-1) under a total writing intensity of 1 W/cm(2), and high spatial resolution of 45 line pairs/mm. Reconstruc ted images with high fidelity have been obtained in real-time holograp hic and the dark decay of diffraction signal with increased writing in tensity indicate that two species and shallow traps exist in Co:KNSBN crystal. (C) 1997 Optical Society of America.