Analysis on performance of two-color holographic storage based on Fe:Mn:LiNbO3 crystal

作者：Guo Ruhai^*; Guo Jin; Guo Lihong; Shi Hongyan; Li Dianjun; Yang Guilong

来源：Acta Optica Sinica, 2009, 29(12): 3328-3332.

DOI：10.3788/AOS20092912.3328

• Degree of oxidations
• Developing process
• Diffractive efficiency
• Dynamic range
• Experimental curves
• Holographic storage
• Non-volatile holographic storage
• Nondestructive read-out
• Photorefraction
• Recording sensitivity
• Reduction degree
• Space charge field
• Trade off
• Transport models
• Two-color holographic storage
• Two-wave coupling

The paper established the coupling differential equations using the band-transport model. Using practical experiment's parameters, we numerically calculated and explained the time-dynamic developing process of the holographic storage, and analyzed how the oxidation-reduction degree of the crystal affects the space charge field within the crystal. Only the oxidative crystals can accomplish nonvolatile holographic storage, which its diffraction efficiency after red-light read-out increases with the increase of oxidative degree. Further more we measured the diffraction efficiencies of four specimens with different degree of oxidation-reduction and did comparable experiments of two-wave coupling between reductive crystals and oxidative crystals. The experimental results coincided with the theoretical analysis very well. At the same time, holographic dynamic range M/# and recording sensitivity of oxidative crystal was quantitatively calculated by using experimental curve in which value of M/# equaled to 5.03 (extraordinary light, wavelength, 632 nm), but trade off with lower sensitivity.

• 出版日期2009