A nonuniform photovoltaic field is created in Fe:LiNbO<sub>3</sub> during hologram recording exposures. Experimental results and analysis show the degradation of the volume holograms in the presence of the photovoltaic field. A sodium chloride solution is used to short-circuit the crystal to improve the stored- image quality. Experimental results to demonstrate the effectiveness of the proposed method are presented.
© 2002 Optical Society of America
Qingsheng He, Guodong Liu, Xiaochun Li, Jiangang Wang, Minxian Wu, and Guofan Jin, "Suppression of the Influence of a Photovoltaic dc Field on Volume Holograms in Fe:LiNbO3," Appl. Opt. 41, 4104-4107 (2002)