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    • 16. 发明申请
    • Systems and methods for compact transmission hologram readout
    • 用于紧凑型透射全息读出的系统和方法
    • US20070013985A1
    • 2007-01-18
    • US11485824
    • 2006-07-12
    • Ernest ChuangKevin Curtis
    • Ernest ChuangKevin Curtis
    • G03H1/26G03H1/04
    • G03H1/02G03H1/0256G03H2250/42G11B7/0065G11B7/24062G11B7/26
    • A method is provided for manufacturing a holographic medium by recording holograms in transmission geometry, and applying a reflective layer to one side of the holographic recording material after recording is completed (alternatively, for example, the playback system may contain a reflective surface or mirror). For readout, the reference beam is incident to the media from a side opposite the reflective layer. This beam propagates through the media to the reflective layer on the opposite side, and is reflected back through the media for readout of the transmission hologram. The diffracted hologram signal also exits the media on the side without the reflective layer, where it can be recovered by a detector on the same side as the laser source. Alternatively, the readout reference beam is positioned so that the incident beam reads out the hologram, and both the reference beam and diffracted hologram are reflected back through the media.
    • 提供了一种通过记录透射几何形状的全息图来制造全息介质的方法,并且在完成记录之后将反射层施加到全息记录材料的一侧(或者,例如,重放系统可以包含反射表面或反射镜) 。 为了读出,参考光束从与反射层相对的一侧入射到介质。 该光束通过介质传播到相反侧的反射层,并通过介质被反射回来,用于读出透射全息图。 衍射的全息图信号也离开没有反射层的一侧的介质,其中它可以通过与激光源相同侧的检测器回收。 或者,读出的参考光束被定位成使得入射光束读出全息图,并且参考光束和衍射的全息图都通过介质反射回来。
    • 17. 发明申请
    • Erasing holographic media
    • 擦除全息媒体
    • US20060280096A1
    • 2006-12-14
    • US11440366
    • 2006-05-25
    • Brian RileyKen AndersonLarry FabinyIan RedmondCurtis ShumanBradley SissomKevin CurtisAaron WegnerMichael Cole
    • Brian RileyKen AndersonLarry FabinyIan RedmondCurtis ShumanBradley SissomKevin CurtisAaron WegnerMichael Cole
    • G11B7/00
    • G11B7/0065G11B7/0055G11B7/1275
    • The present invention relates to embodiments of a process for subjecting a holographic storage medium to illuminative treatment to: (1) enhance or optimize recording of holographic data; (2) enhance or optimize reading of recorded holographic data; and/or (3) erase recorded holographic data. The present invention also relates to embodiments of a system comprising: (a) an illuminative treatment beam; (b) means for reducing the coherence of the beam and (c) means for transmitting the reduced coherence beam to cause illuminative treatment of: (1) an unrecorded portion of a holographic storage medium to provide pre-cured portions having increased ability to stably record holographic data; (2) a recorded portion of a holographic storage medium to provide a post-cured portion having reduced residual sensitivity; and/or (3) a recorded portion of a holographic storage medium having holographic data to provide an erased portion wherein at least some of the recorded holographic data is erased.
    • 本发明涉及对全息存储介质进行照明处理的方法的实施例:(1)增强或优化全息数据的记录; (2)增强或优化记录全息数据的阅读; 和/或(3)擦除所记录的全息数据。 本发明还涉及一种系统的实施例,包括:(a)照明处理光束; (b)用于减小光束的相干性的装置,(c)用于透射减小的相干光束的装置,以引起照明处理:(1)全息存储介质的未记录部分,以提供具有增强的稳定能力的预固化部分 记录全息数据; (2)全息存储介质的记录部分,以提供具有降低的残留灵敏度的后固化部分; 和/或(3)具有全息数据的全息存储介质的记录部分以提供擦除部分,其中记录的全息数据中的至少一些被擦除。