Development of Industry’s First Ultra-Fast Pulsed Blue-Violet Semiconductor Laser
Tohoku University, Advance Materials Laboratories and Sony have jointly developed, industry’s first ultra-fast pulsed ultra-violet semiconductor laser, paving the way for practical light-source in next generation large capacity optical disc as well as nano-fabrication. The newly developed blue-violate semiconductor laser features a dramatic improvement in peak laser beam output levels, at 100 times in comparison to current highest levels. This all-semiconductor picosecond pulse source laser with a wavelength of 405 nanometer is capable of generating optical pulses in the ultra fast duration of 3 picoseconds, with ultra-high output peak power of 100 watts and repetition frequency of 1 gigahertz. This was made possible through newly developed proprietary GaN-based mode-locked semiconductor laser and semiconductor optical amplifier. The new technology can contribute to drastic reduction of size of light source box. The new semiconductor laser is capable of using a nonlinear optical process known as two-photon absorption, occurring in an event of high intensity optical pulses. Read more
