Sony, university make blue-violet laser for 1TB Blu-ray disc
Researchers at Sony together with those at Japan's Tohoku University said they have developed a blue-violet laser that can create 1TB Blu-ray discs. The ultrafast pulsed semiconductor laser has a laser wavelength of 405 nanometers and can generate optical pulses just the picoseconds in duration. Moreover, the new laser doesn't require a large light source and a specialist technician to operate, as required in the past with similar technology....
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