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公开(公告)号:US06670079B1
公开(公告)日:2003-12-30
申请号:US09598222
申请日:2000-06-21
申请人: Kenji Kitamura , Yasunori Furukawa , Shunji Takekawa , Myeongkyu Lee , Hideki Hatano , Satoru Tanaka , Takashi Yamaji
发明人: Kenji Kitamura , Yasunori Furukawa , Shunji Takekawa , Myeongkyu Lee , Hideki Hatano , Satoru Tanaka , Takashi Yamaji
IPC分类号: G03H103
CPC分类号: G11C13/045 , G03H2260/54
摘要: A photorefractive material provides a high photosensitivity without reduction. The material comprises a single crystal of terbium (Tb)-doped niobate or tantalate. The single crystal is a single crystal of lithium niobate (LiNbO3) whose molar fraction of [Li2O]/([Li2O]+[Nb2O5]) lies in a range of 0.482 to 0.505, or a single crystal of lithium tantalate (LiTaO3) whose molar fraction of [Li2O]/([Li2O]+[Ta2O5]) lies in a range of 0.482 to 0.505. The amount of terbium added in the photorefractive material ranges from 10 weight ppm to 1000 weight ppm.
摘要翻译: 光折射材料提供高的光敏性而不会减少。 该材料包括铽(Tb)掺杂的铌酸盐或钽酸盐的单晶。 该单晶是其[Li 2 O] /([Li 2 O] + [Nb 2 O 5])的摩尔分数在0.482〜0.505的范围内的铌酸锂(LiNbO 3)的单晶,或者是钽酸锂(LiTaO 3)的单晶, [Li 2 O] /([Li 2 O] + [Ta 2 O 5])的摩尔分数在0.482〜0.505的范围内。 在光折射材料中添加的铽的量为10重量ppm至1000重量ppm。
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公开(公告)号:US06473208B1
公开(公告)日:2002-10-29
申请号:US09598382
申请日:2000-06-21
申请人: Myeongkyu Lee , Kenji Kitamura , Yasunori Furukawa , Shunji Takekawa , Yoshihisa Ito , Hideki Hatano , Satoru Tanaka
发明人: Myeongkyu Lee , Kenji Kitamura , Yasunori Furukawa , Shunji Takekawa , Yoshihisa Ito , Hideki Hatano , Satoru Tanaka
IPC分类号: G03H103
CPC分类号: G03H1/0248 , G03H2001/026 , G03H2001/0268 , G11B7/0065
摘要: A two-color holographic recording apparatus reduces error signals possibly included in reproduced digital data signals. The two-color holographic recording apparatus has first, second and third light shutters for passing or blocking gate light, signal light and reference light incident on a recording medium respectively, and a controller for controlling the respective states of the first, second and third light shutters.
摘要翻译: 双色全息记录装置减少可能包含在再现的数字数据信号中的误差信号。 双色全息记录装置具有分别用于通过或阻挡入射在记录介质上的栅极光,信号光和参考光的第一,第二和第三光闸,以及用于控制第一,第二和第三光的各自状态的控制器 百叶窗。
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