Sumitomo Electrics is proud to announce that they are the first company to design what they consider a (pure) green laser diode. What makes the laser light â€œpureâ€ is a new development in the diode that allows it to remain at the 531nm wavelength that is needed to produce the green color. Older versions of green and blue lasers uses a material called Gallium nitride (GAN). This material produces a phenomenon where the luminance efficiency shows a rapid decline with increasing wavelength. The increased wavelength throws the laser out of the colorâ€™s range, which is why the company doesnâ€™t consider older lasers â€œpure.â€ The pure-green laser diodes will soon be mass produced and are expected to be integrated into pico projectors and other laser using electronics.