holographic data recording and retrieval

In holographic data storage, the information to be saved is encoded into a laser signal beam using a spatial light modulator (SLM). The SLM converts binary electronic data into a checkerboard optical configuration of white and black that can record nearly a megabyte of data. The beam with recorded data is focused within a semi-transparent optically sensitive material. Inside this material, it intersects with a second ray and the pattern of overlapping peaks and troughs imprints a hologram within the media. When the hologram is illuminated at a later time by a laser ray similar to the reference beam used to make it, then the interference pattern containing the information is recreated and read. Holographic storage: the 500GB business card covers related topics in detail.

One can find many potential usages of holographic data systems in the overall area of interactions and imaging. "Holographic cameras" will employ holotechnology data storage and extraction to archive and project three-dimensional visual worlds. Holotech computer graphic interfaces and interfaces, such as motion recognition systems, will enable considerably more natural human to computer contact than can be done with current two- dimensional image projections and keyboard with mouse. Holographic imaging with pulses that are temporally gated will enable high-resolution views of things embedded in translucent material such as body fluid or translucent atmospheres. Linked page VRNI also has developments on this holotechnology topic.

See Holographic Search Engine as well for more regarding holotechnology.