Self-referential holography and its applications to data storage and phase-to-intensity conversion.
Self-referential holography and its applications to data storage and phase-to-intensity conversion.
复制标题
DOI：
10.1364/oe.21.003669
复制
发表时间：
2013-02
期刊：
影响因子：
3.8
通讯作者：
M. Takabayashi;A. Okamoto
中科院分区：
文献类型：
--
作者：
M. Takabayashi;A. Okamoto
全息记录方法需要使用与携带要记录的信息的信号光束相干的参考光束。在这篇文章中，我们提出了自参考全息术(SRH)用于全息记录而不使用参考光束。SRH可以将信号光束本身作为参考光，实现纯单光束全息记录。SRH的读出过程是基于全息衍射中像素间干涉的能量传递，这取决于记录相位和读出相位之间的空间相位差。经相位调制的记录信号被转换成可使用传统图像传感器容易检测的强度调制光束。SRH可以有效地用于全息数据存储和位相到强度转换。
Holographic recording methods require the use of a reference beam that is coherent with the signal beam carrying the information to be recorded. In this paper, we propose self-referential holography (SRH) for holographic recording without the use of a reference beam. SRH can realize purely one-beam holographic recording by considering the signal beam itself as the reference beam. The readout process in SRH is based on energy transfer by inter-pixel interference in holographic diffraction, which depends on the spatial phase difference between the recorded phase and the readout phase. The phase-modulated recorded signal is converted into an intensity-modulated beam that can be easily detected using a conventional image sensor. SRH can be used effectively for holographic data storage and phase-to-intensity conversion.