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A concept is described that could allow Holographic Data Storage with angular multiplexing using, uniquely, only one data writing beam; pre-recorded ‘seed’ gratings are illuminated with one writing beam in order to produce a data grating.
Martin, S., Bade, D. & Naydenova, I. (2009). A single beam data writing process for holographic data storage. Optical Data Storage Topical Meeting, ODS '09., pg.70-72, 10-13 May. doi: 10.1109/ODS.2009.5031757