Coulomb-correlated electron-hole plasma and gain in a quantum-wire laser of high uniformity

被引：34

作者：

Akiyama, H

Pfeiffer, LN

Yoshita, M

Pinczuk, A

Littlewood, PB

West, KW

Matthews, MJ

Wynn, J

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

[3] Columbia Univ, Dept Phys, New York, NY 10027 USA

[4] Univ Cambridge, Cavendish Lab, TCM Grp, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.67.041302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A multi-quantum-wire laser operating in the one-dimensional (1D) ground state has been achieved in a very high uniformity structure that shows free-exciton emission with unprecedented narrow width and low lasing threshold. Under optical pumping, the spontaneous emission evolves from a sharp free exciton peak to a redshifted broad band. The lasing photon energy occurs about 5 meV below the free exciton. The observed shift excludes free excitons in lasing and our results show that Coulomb interactions in the 1D electron-hole system shift the spontaneous emission and play significant roles in laser gain.

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页数：4

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