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Quantum Dots

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Promise a New Dimension for Semiconductor Lasers

Simon Fafard

The techniques used to manufacture computer chips have created a wealth of optoelectronic devices with remarkable features. These heterostructures (sandwiches created by alternating layers of two materials with different conductive properties) owe their special properties to structures which reduce the movement of electrons.For example, laser diodes used to such great advantage in the telecommunication industry, were made possible by confining carriers, or electrons, within quantum wells. By further limiting the carriers, researchers hope to increase the efficiency and thermal stability of...Read full article

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