Quasi-nonvolatile storage in Ru-doped Bi12SiO20 crystals by two-wavelength holography

Abstract

Prolonged read-out process of a hologram recorded at near infrared with simultaneous green light exposure is measured in Ru-doped Bi12SiO20 crystal. The experimental results are confirmed by numerical simulations, suggesting two different traps involved in the space-charge transport mechanism. In addition, quasi-permanent holographic recording of image with fast updating speed by using two-wavelength recording is demonstrated. (C) 2012 Optical Society of America