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公开(公告)号:US06835368B2
公开(公告)日:2004-12-28
申请号:US09881836
申请日:2001-06-18
申请人: Yongfa Kong , Jingjun Xu , Guangao Li , Qian Sun , Baiquan Tang , Hui Huang , Ziheng Huang , Shaolin Chen , Xiaojun Chen , Guangyin Zhang
发明人: Yongfa Kong , Jingjun Xu , Guangao Li , Qian Sun , Baiquan Tang , Hui Huang , Ziheng Huang , Shaolin Chen , Xiaojun Chen , Guangyin Zhang
IPC分类号: C01D102
CPC分类号: G11B7/243 , C01G33/00 , C01G49/009 , C01P2002/52 , C01P2006/80 , G11B7/0065 , G11B7/26 , G11C13/041
摘要: This invention relates to the field of materials of the photorefractive crystal. The composition of these crystals is Li1−xNb1+yO3: Fem, Mn, where M can be magnesium, indium, or zinc; when using q to denote the ion valence of M (q=2 when M is Mg or Zn, and q=3 when M is In), the values of x, y, m, and n are in the range of 0.05≦x≦0.13, 0.00≦y≦0.01, 5.0×10−5≦m≦7.5×10−4, and 0.02≦qn≦0.13. This invention greatly improves the photorefractive properties of LiNbO3 crystals: makes it have a high diffraction efficiency (more than 68%), a fast response speed for photorefraction (an order of magnitude faster than iron doped LiNbO3), and a high resistance to optical scattering (the light intensity threshold to photorefractive fan scattering near two orders of magnitude larger than LiNbO3: Fe). This invention is an excellent three-dimensional optical storage material and has a vast potential market.
摘要翻译: 本发明涉及光折射晶体的材料领域。 这些晶体的组成为Li1-xNb1 + yO3:Fem,Mn,其中M可以是镁,铟或锌; 当使用q表示M的离子价(当M是Mg或Zn时为q = 2,当M为In时为q = 3),x,y,m和n的值在0.05 <= x <= 0.13,0.00 <= y <= 0.01,5.0×10 -5≤= 7.5×10 -4,0.02 <= q n <= 0.13。 本发明大大提高了LiNbO3晶体的光折射性能:使其具有高的衍射效率(大于68%),光折射的快速响应速度(比掺杂铁的LiNbO 3快一个数量级)和高的光散射性 (光强度阈值对光折变散射散射近于两个数量级大于LiNbO3:Fe)。 本发明是一种优良的三维光学存储材料,具有广阔的市场潜力。