9 February 2012 Multiplex and multilevel optical recording for optical mass-storage by retardagraphy
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Abstract
Multi-valued phase patterns were multiply recorded by retardagraphy in order to improve recording density and data transfer rate. In the experiment, the phase pattern consists of four values were recorded on a polarization-sensitive medium by focusing the recording beam, and three patterns were multiply recorded by shifting the focal point. The recorded patterns could be independently reconstructed.
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Hiroki Sekiguchi, Hiroki Sekiguchi, Daisuke Barada, Daisuke Barada, Takanori Ochiai, Takanori Ochiai, Takashi Fukuda, Takashi Fukuda, Shigeo Kawata, Shigeo Kawata, Toyohiko Yatagai, Toyohiko Yatagai, } "Multiplex and multilevel optical recording for optical mass-storage by retardagraphy", Proc. SPIE 8281, Practical Holography XXVI: Materials and Applications, 828117 (9 February 2012); doi: 10.1117/12.909859; https://doi.org/10.1117/12.909859
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