updated 01:56 pm EDT, Thu June 21, 2012
Sumitomo, Sony collaborate on green laser for projectors with >100mW output
Sony and Sumitomo Electric have jointly developed a new gallium nitride green laser diode that has twice the luminosity of traditional gallium nitride (GaN) green lasers. It can produce an optical output of more than 100mW in the true green region at a wavelength of 530nm.
The invention can be mounted on laser projectors and other display devices, and are said to produce more vibrant video and images. The laser is based on Sumitomo Electric's semi-polar GaN substrate, crystal growth, and wafer-processing technologies along with Sony's GaN-based laser tech gleaned from years of Blu-ray development. The laser diode is said to realize wall-plug efficiency of over eight percent.
The companies will continue to develop the technology in order to get even more power, efficiency and quality out of it.