light-based wireless communication tagged posts

This schematic illustrates the novel nanosheet with three parallel segments created by the researchers, each supporting laser action in one of three elementary colors. The device is capable of lasing in any visible color, completely tunable from red, green to blue, or any color in between. When the total field is collected, a white color emerges. Credit: ASU/Nature Nanotechnology

More luminous, energy efficient than LEDs, white lasers look to be the future in lighting and Li-Fi, light-based wireless communication. Arizona State Uni researchers proved semiconductor lasers can emit over the full visible color spectrum: necessary to produce a white laser.

They created a novel nanosheet – thin layer of semiconductor ~1/5 of the thickness of human hair in size -with 3 parallel segments, eac...