Scattering-Suppression in Photochromic LiNbO3:Fe:Mn
Non-volatile Holographic Recording
LIU De-An1, LIU Li-Ren1, LIU You-Wen1, ZHOU Chang-He1, XU Liang-Ying2
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Shanghai Institute of Silicate, Chinese Academy of Sciences, Shanghai 200050
Scattering-Suppression in Photochromic LiNbO3:Fe:Mn
Non-volatile Holographic Recording
LIU De-An1;LIU Li-Ren1;LIU You-Wen1;ZHOU Chang-He1;XU Liang-Ying2
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Shanghai Institute of Silicate, Chinese Academy of Sciences, Shanghai 200050
Abstract： We propose and experimentally investigate a new scheme capable of suppressing the light-induced scattering by periodical incoherent erasure during every non-volatile holographic recording cycle in photochromic LiNbO3:Fe:Mn crystals. The results demonstrate that the scattering noise is suppressed effectively, and the final diffraction efficiency of the fixed grating is significantly enhanced, rather than decrease, by about 30% compared with the conventional recording procedure. The period of the recording and incoherent erasure cycle is theoretically calculated and experimentally optimized.
2001, Vol. 18 
