Abstract

A reduction of dimensionality of the electron motions in quantum nano-structures brings new phenomena in semiconductor physics. Moreover, it allows new device concept to be considered and permits improvements in performance of the transistors and lasers. In 1982, the quantum wire laser and the quantum dot laser were proposed, predicting significant improvement of lasing characteristics[1]. When the concept was proposed, it was considered that the quantum wires and quantum dots would be realized in the 21

© 1997 Optical Society of America