7 colors are passed: using laser beams, physicists create a rainbow of 11 shades

Physicists University of Santa Barbarain the United States experiences with lasers that resulted in a luminous effect with different colors. Basically, a rainbow with eleven different colors.

When issuing the laser at two frequencies – a high and a low – against a semiconductor material, the electrons were separated from the nuclei of their atoms. Then, as they were accelerated and launched back to the nuclei, several frequencies of light were emitted. The energy released when the electron becomes excessively charged, dissipating that energy when it collides with its core.

Mark Sherwin, professor of physics and responsible for the discovery, says it is amazing to see this phenomenon, which had never happened before.


This new phenomenon can generate benefits in the real world. With the greater variety of colors, it is possible to increase the speed of communication transfer processes – such as your internet cable, for example. If before, 7 colors – or 7 channels – were used to transfer data, now it is possible to use 11 channels with the same resources.

velocity Curiosities Science Laser physics

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