Lasers produced what can be called almost monochromatic light which means it comes in just one color. By combining 3 single colored lasers, red, green and blue (RGB), it is possible to replicate the whole visible-light spectrum. However, to accomplish this, current technology requires three separate lasers of different color. Now however, a physicist from Brown University called Cuong Dang along with his team of researchers have managed to produce a single material that is capable of producing several different wavelengths and therefore different colors of laser light.
Ubergizmo, Quantum Dots Used to Build RGB Laser
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