Sony Develops Powerful Laser for 1TB Optical Disc

The Blu-ray Disc Association may have just passed the BDXL specification that expands that capacity of Blu-ray media to 100GB, but the real roomy optical format of the future is being developed in a lab in Japan right now.

Sony and Tohoku University have created a laser that has a beam output that's in excess of 100 watts, which is more than a hundred times the world’s highest output value for conventional blue-violet pulse semiconductor lasers.

This latest successful development is an all-semiconductor laser picosecond pulse source with a laser wavelength of 405 nanometers (1 nm = one-billionth of a meter) in the blue-violet region. It is capable of generating optical pulses in the ultrafast duration of 3 picoseconds (1 picosecond = one-trillionth of a second), with ultrahigh output peak power of 100 watts and repetition frequency of 1 gigahertz.

What's even more remarkable, boasts Sony, is that that other ultra high-output laser devices require a bulky light source box and a specialist technician to ensure the stable operation of the laser. This technology, however allows for a much smaller lightbox and perhaps for a more automated process. 

Sony said that it has already tested applying this technology in next-generation large-capacity optical disc-storage, which could mean capacities 20 times greater than what we have now.

This laser technology could also be applied to a wide range of fields such as three-dimensional (3D) nano-fabrication of inorganic/organic materials. 

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  • tinnerdxp
    So where does the 1TB comes from?
    Only reference is "which could mean capacities 20 times greater than what we have now." - which would imply 100GB x 20 = 2TB...
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  • aje21
    tinnerdxpSo where does the 1TB comes from? Only reference is "which could mean capacities 20 times greater than what we have now." - which would imply 100GB x 20 = 2TB...

    Unless the 20x reference was to the current non-XL version of BluRay?
    2
  • jamie_macdonald
    well even blueray as it stands still does not have a fast enough write speed to make filling a 50gb drive usefull for anything much at home.

    how increasing the capacity will help i do not know! ... blue ray still has yet to impress me .. released to early ... without decent hardware for writing and forced in by a corporate monopoly to sell more un-needed equipment,

    make the speed increase for write however and i will see it as usefull ;)
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