Yes it is possible to store one Terabyte data in a sugar cube sized crystal. It is a 3D memory storage device. In most memory storage devices like magnetic and optical storage devices, the bits of information are stored along the surface. However, in holographic memory storage device, the information is stored making use of the entire volume of the medium and is able to record images in the same area making use of light at different angles. Thus using holographic technique it is possible to read and write millions of bits in parallel.
Recording Data
As shown in figure, the laser is split into two beams by the beam splitter. One portion of the beam travels through the spatial light modulator. A Spatial light modulator (SLM) can be a liquid crystal display with the data pattern to be written appearing on it as dark and bright spots. The beam after passing through the SLM, is made to combine with the reference beam and produces an interference pattern which is stored onto a particular region on the crystal. This region can be varied by adjusting the writing beam angle. this enables data to be stored on same area but at different region within the volume.
Reading Data
In order to get the stored data, the reference beam is made incident onto the crystal at the same angle at which the data was written.
Recording Data
Reading Data
In order to get the stored data, the reference beam is made incident onto the crystal at the same angle at which the data was written.
Wow super to here about this!!
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