16
January 2003
Nanotechnology: Nanoscale lasers
A number of telecommunications and medical diagnostics systems make use of electrically driven semiconductor lasers. This is costly technology and the lasers currently in use are not readily incorporated into silicon circuitry. The demonstration that a single cadmium sulphide nanowire can act as an electrically driven laser is therefore of considerable interest. The approach used is one that should be adaptable to using nanowires of different chemical compositions to produce nanoscale lasers spanning the ultraviolet to near-infrared. Possible future applications for miniaturized electrically driven lasers could include lab-on-a chip systems and ultradense data storage.
Single-nanowire electrically driven lasers
XIANGFENG DUAN, YU HUANG, RITESH AGARWAL & CHARLES M.
LIEBER
Nature 421, 241–245 (2003); doi:10.1038/nature01353
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