Optically pumped intersubband laser: Resonance positions and many-body effects

被引：22

作者：

Liu, HC ^{[1
]}

SpringThorpe, AJ

机构：

[1] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

[2] Nortel Networks, Nortel Microelect, Ottawa, ON K2H 8E9, Canada

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.61.15629

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Intersubband transition (IT) between confined states in quantum wells (QW's) is a fully collective phenomenon displaying distinct many-body effects. These effects are seen in an optically pumped ITQW laser. The strong pump, needed to achieve population inversion, "undresses" the depolarization effect, leading to a redshift in the absorption peak position. The emission wavelength is also redshifted due to a combination of Hartree, exchange-correlation, and depolarization effects. The depolarization shift is in the opposite direction for the emission between population inverted levels than for the usual absorption case.

引用

页码：15629 / 15632

页数：4

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