Scattering-suppression in photochromic LiNbO3 : Fe : Mn non-volatile holographic recording

We propose and experimentally investigate a new scheme capable of suppressi ng light-induced scattering by periodical incoherent erasure during every n on-volatile holographic recording cycle in photochromic LiNbO3:Fe:Mn crysta ls. The results demonstrate that the scattering noise is suppressed effecti vely, and the final diffraction efficiency of the fixed grating is signific antly enhanced, rather than decreased, by about 30% compared with the conve ntional recording procedure. The period of the recording and incoherent era sure cycle is theoretically calculated and experimentally optimized.