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Common-path angular-multiplexing holographic data storage based on computer-generated holography
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DOI：10.1364/OL.427113.png)
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An unconventional angular-multiplexed recording technique is proposed for holographic data storage based on a computer-generated hologram (CGH) technique. While general angular-multiplexed recording techniques require a Mach-Zehnder interferometer to record data pages as volume holograms, the proposed method records ones with a common-path configuration with the help of a CGH technique, which prevents the optical setup from being bulky. In the proposed method, the CGH reconstructs signal and reference beams simultaneously, and these beams interfere in a recording medium. By changing the diffraction angle of the reference beam from the CGH, angular multiplexing is accomplished with a common-path optical setup without additional optical elements. Multiplexed recording of four data pages is demonstrated in a proof-of-principle experiment, which indicates the feasibility of the proposed method. (C) 2021 Optical Society of America
Keyword:
INTENSITY
TRANSPORT
WAVE
期刊
IF:
3.3
论文数:
4.0W
被引数:
7.6W
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