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1 March 2013 Hologram recording method for 1 Tbit/in2
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We examined the possibility of high-density recording using shift-multiplexed holographic memory with a spherical reference beam. The use of a spherical reference beam is considered to make it possible to realize a multi-dimensional multiplex system that uses the disk track direction (x-axis), radial direction (y-axis), and disk thickness direction (z-axis); this would clearly improve the recording density when compared with the conventional angle multiplex recording. The experimental results confirm the possibility of multiple recording by 3 dimensional medium shift. Furthermore, the results indicate that a large capacity memory system of over 1 Tb/in2 can be obtained if a thick medium (about 1.5 mm) is used.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shohei Ozawa, Kaito Okubo, Hiroyuki Kurata, Takefumi Yamada, Shuhei Yoshida, and Manabu Yamamoto "Hologram recording method for 1 Tbit/in2", Proc. SPIE 8644, Practical Holography XXVII: Materials and Applications, 86440Y (1 March 2013);


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