Sumitomo Electric Industries Ltd. and Sony Corp. said June 21 that they had developed a new green laser that will significantly improve the performance of laser projectors and other display devices.
The semiconductor laser diode, the world’s first with an optical output power of over 100 mW in the true green region at a wavelength of 530 nm, is twice as bright as conventional gallium nitride (GaN) green laser diodes and has a much wider color range, the companies said.
Green lasers are currently generated by converting the wavelength of infrared laser light from a light source using optical materials. Sumitomo Electric and Sony’s new technology produces a true green laser.
“Sumitomo Electric and Sony anticipate a wide variety of applications for this technology such as incorporation into advanced laser projectors with high luminosity and broad color gamut, as well as compact, light, energy-efficient laser projectors,” the companies said in a statement.
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