1. Error-free reconstruction of magnetic hologram via improvement of recording conditions in collinear optical system
- Author
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Taichi Goto, Zen Shirakashi, Hiroyuki Takagi, Hironaga Uchida, Yuichi Nakamura, Pang Boey Lim, and Mitsuteru Inoue
- Subjects
010302 applied physics ,Diffraction ,Physics ,business.industry ,Holography ,Physics::Optics ,02 engineering and technology ,Iterative reconstruction ,021001 nanoscience & nanotechnology ,Holographic interferometry ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,law.invention ,Digital micromirror device ,Optics ,Interference (communication) ,law ,Reference beam ,0103 physical sciences ,Computer data storage ,0210 nano-technology ,business - Abstract
Magnetic holographic memory is expected as a rewritable high-capacity data storage technology. To improve the reconstructed image, we investigate recording conditions by numerical simulation and experiments. We found experimentally that four diffracted beams from a digital micromirror device interfere with each other at a suitable defocus recording point, and such overlapping is favorable to obtain clear reconstruction images without diffuser. Subsequently, we modify the shape of the reference beam to ensure more effective interference. As a result, we achieve error-free image reconstruction from the magnetic hologram. Our results indicate that magnetic holograms can potentially be utilized as holographic memory.
- Published
- 2017