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Femtosecond optical gain in strongly confined quantum dots

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Abstract

Optical gain was found in strongly confined CdSe quantum dots. As a result of a multitude of one- and two-electron–hole pair transitions, the gain region is broad and quasi-continuous and stretches below the absorption edge. We present a model for gain in a quasi-zero-dimensional quantum confined semiconductor system that agrees well with the femtosecond experiments.

© 1996 Optical Society of America

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