How does holographic memory work?
Holographic memory is a crystalline or photopolymer technology of a new generation storage that competes with many other dominance of the future computer memory market. It is currently in the research and development phase, which means that many successful prototypes have been built, but technology is still improving and has not yet been commercialized. Commercialization is expected at the end of 2006, when Optware and Maxwell release variants of the holographic universal disk capable of containing 200 gigabytes (GB) and 300 GB of data. In a few years, the ripe form of the disk is expected to reach the market. This model will have almost 4 terabytes (TB) or 4000 GB, which is sufficient to contain 8,700 hours of video. Instead of using a range of pit and groove to store data, as well as in a compact disk, holographic memory is encoded as an interference formula between two lasers. These two lasers are referred to as a reference beam and signal beam . Signal beam holds data while reference papRSEK usually remains constant. Because writing on a disk creates a hologram, a comprehensive 3D crystal formula, just shine a reference beam on the disk at a precise angle so that the original image should be reflected again.
holographic memory technology circumvents the limitation of conventional storage technologies of optical memories by using inherently three-dimensional holography to coded data, rather than conventional 2D reading-a-lag beams. This means that the entire volume of crystal can theoretically be used to coded holographic data of memory, although this is not possible in practice. Nevertheless, any three-dimensional degree is a great advantage for optical technology memory storage, enough to make holographic memory jumps and limits to DVD and Blu-ray technology.
More holograms can be layered on top of each other in the same medium, a quality known as multiplexing . Changing the angle of the reference beam can be coded completelynew picture and then projected. Any small change in the crystal angle can lead to a completely new reconstructed holographic image, almost up to the atoms of the crystal itself to contain information. Holographic memory is technology that is different from what came before her.