Quantum dimensionality, entropy, and the modulation response of quantum dot lasers

被引：75

作者：

Deppe, DG ^{[1
]}

Huffaker, DL ^{[1
]}

机构：

[1] Univ Texas, Dept Elect & Comp Engn, Microelect Res Ctr, Austin, TX 78712 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 21期

关键词：

D O I：

10.1063/1.1328090

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Rate equations are used to show that the modulation response of quantum dot lasers can be limited by entropy change due to carrier relaxation from a wetting layer. The entropy change is due to the difference in the spectral density of quantum states between the two-dimensional wetting layer and the zero-dimensional quantum dot. When limited by this effect, the laser's 3 dB modulation response becomes strongly temperature dependent. (C) 2000 American Institute of Physics. [S0003-6951(00)02647-4].

引用

页码：3325 / 3327

页数：3

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