Design of high-resolution and multilevel reference pattern for improvement of both light utilization efficiency and signal-to-noise ratio in coaxial holographic data storage.

Design of high-resolution and multilevel reference pattern for improvement of both light utilization efficiency and signal-to-noise ratio in coaxial holographic data storage.
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设计高分辨率、多级参考图案,提高同轴全息数据存储中的光利用效率和信噪比。

DOI:
10.1364/ao.53.003773
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发表时间:
2014
期刊:
影响因子:
1.9
通讯作者:
T. Nomura
T. Nomura
中科院分区:
工程技术4区
文献类型:
--
作者:
Teruyoshi Nobukawa;T. Nomura

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为了提高同轴全息数据存储中重构图像的光利用率和信噪比,提出了一种高分辨率多级设计参考图(DRP)。利用DRP,可以得到参考光束的傅里叶功率谱。数值和实验结果表明,与随机相位掩模(RPM)相比,DRP提高了信噪比。此外,DRP的光利用效率高于高分辨率RPM。此外,还研究了DRPs的相位电平和像素间距对信噪比和光利用效率的影响。
A high-resolution and multilevel designed reference pattern (DRP) is presented for improvement of both light utilization efficiency and the signal-to-noise ratio (SNR) of reconstructed images in coaxial holographic data storage. With a DRP, the desired Fourier power spectrum of a reference beam is obtained. Numerical and experimental results show that the DRP increases the SNR compared with that of a random phase mask (RPM). Moreover, the light utilization efficiency of the DRP is higher than that of a high-resolution RPM. In addition, the effect of the phase level and the pixel pitch of DRPs on the SNR and the light utilization efficiency are investigated.
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DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
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通讯作者: Takayuki Hoshi
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DOI: --
发表时间: 2006
期刊: Japanese Journal of Applied Physics 45
影响因子: --
作者:
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通讯作者: 小舘香椎子