Sharp Develops Semiconductor Laser for Triple, Quadruple-layer Blu-ray Discs
Sharp Corp developed a blue-violet semiconductor laser whose optical output is as high as 500mW under pulsed operation for use in Blu-ray Disc (BD) recorders.
It has an oscillation wavelength of 405nm and a capability of writing at 8x speed on triple- and quadruple-layer Blu-ray discs. The company started volume production of a blue-violet semiconductor laser with 320mW pulsed output in June 2009.
