Pulsed green laser diode finally developed

摘要

Laser diodes will soon be available in all the light source colours needed for a projector - red, green and blue - after Sumitomo Electric Industries Ltd, which has Head Offices in Osaka and Tokyo, Japan, achieved pulse oscillation with green laser light at 531 nm.rnRed and blue laser diodes are already available on the market, but there hasn't been a laser diode capable of directly lasing at about 530 nm for green laser light. Instead, 1064 nm red laser light was wavelength-converted with second harmonic generation (SHG) crystals to produce 532 nm green laser light.