2010 | Achievement and Award
Joint development of the world's first blue-violet ultrafast pulsed semiconductor laser with 100 watt output
Professor Hiroyuki Yokoyama of the New Industry Creation Hatchery Center (NICHe), Tohoku University (hereafter, ‘Tohoku University’), and Advanced Materials Laboratories, Sony Corporation (hereafter, ‘Sony’), have succeeded in jointly developing a blue-violet ultrafast pulsed semiconductor laser※２ with dramatically improved peak laser beam output levels that are 100 times that of the world’s current highest levels.
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. Advanced control of the newly-developed and proprietarily-constructed GaN-based mode-locked semiconductor laser and semiconductor optical amplifier※4 have enabled peak output power in excess of 100 watts to be achieved, which is more than a hundred times the world’s highest output value for conventional blue-violet pulse semiconductor lasers.
These research findings were also published in the latest edition of the US academic journal, ‘Applied Physics Letters’.
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