The effect of dopant composition ratio on nonvolatile holographic recording in LiNbO<sub>3</sub>:Cu:Ce crystals is investigated experimentally. The results show that the dopant composition ratio affects the recording sensitivity and fixed diffraction efficiency by altering the UV light absorption characteristics of the crystals during nonvolatile, holographic recording. Increasing the dopant composition ratio of Cu and Ce leads to an increase in the absorption of UV light and further to an increase in the recording sensitivity and fixed diffraction efficiency. The UV light absorption characteristics of LiNbO<sub>3</sub>:Cu:Ce crystals and their roles in nonvolatile holographic recording are theoretically analyzed. The theoretical results are consistent with those of the experiments.
© 2004 Optical Society of America
(050.7330) Diffraction and gratings : Volume gratings
(090.2900) Holography : Optical storage materials
(090.7330) Holography : Volume gratings
(160.2900) Materials : Optical storage materials
(210.2860) Optical data storage : Holographic and volume memories
Qianmin Dong, Liren Liu, De’an Liu, Cuixia Dai, and Liyong Ren, "Effect of Dopant Composition Ratio on Nonvolatile Holographic Recording in LiNbO3:Cu:Ce Crystals," Appl. Opt. 43, 5016-5022 (2004)