Reflection-type confocal readout for multilayered optical memory.
Reflection-type confocal readout for multilayered optical memory.
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DOI：
10.1364/ol.23.001781
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发表时间：
1998-11
期刊：
影响因子：
3.6
通讯作者：
M. Ishikawa;Y. Kawata;C. Egami;O. Sugihara;N. Okamoto;M. Tsuchimori;O. Watanabe
中科院分区：
文献类型：
--
作者：
M. Ishikawa;Y. Kawata;C. Egami;O. Sugihara;N. Okamoto;M. Tsuchimori;O. Watanabe
我们提出了一种多层光学存储器用于阅读数据与共焦反射显微镜系统。我们使用一种记录介质，其中感光薄膜和非感光透明薄膜交替堆叠。由于感光膜比记录光束的焦深薄，所以记录的位数据的空间频率分布在轴向上延伸。扩展的分布重叠的反射型共焦显微镜的相干光学传递函数。聚氨酯-尿素共聚物膜用作光敏材料。演示了两层的记录和阅读。
We present a multilayered optical memory for use in reading data with a confocal reflection microscope system. We use a recording medium in which photosensitive thin films and nonphotosensitive transparent films are stacked alternately. Since the photosensitive films are thinner than the depth of focus of the recording beam, the spatial frequency distribution of the recorded bit data is extended in the axial direction. The extended distribution overlaps the coherent optical transfer function of the reflection-type confocal microscope. Urethane-urea copolymer film is used as a photosensitive material. The recording and reading of two layers are demonstrated.