Drawing a bead on quantum dot lasers. (quantum dot laser that emits visible light developed)(Brief Article)

From: Science News | Date: November 23, 1996| Author: | Copyright information

Tiny clusters of atoms that trap electrons like shipwrecked passengers on an island may hold the key to a new generation of lasers. Scientists want to use these atomic clusters, known as quantum dots, to make more powerful and efficient lasers that would replace the standard variety widely used in compact disc players and other devices.

To date, quantum dot lasers have been made only in infrared wavelengths. Now, scientists at the National Research Council of Canada in Ottawa have demonstrated the first quantum dot laser that emits visible light, thus increasing the ...

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