Many-body effects on optical gain in strained hexagonal and cubic GaN/AIGaN quantum well lasers

被引：23

作者：

Park, SH ^{[1
]}

Ahn, D ^{[1
]}

机构：

[1] SEOUL CITY UNIV,DEPT ELECT ENGN,TONGDAIMOON KU,SEOUL 130743,SOUTH KOREA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 03期

关键词：

D O I：

10.1063/1.119549

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Theoretical results on the optical gain of strained hexagonal and cubic GaN/AlGaN quantum well (QW) lasers taking into account of many-body effects are presented. These results are also compared with those of the free-carrier theory without the many-body effects. The band structure is calculated by using the Hamiltonian based on the Rashba-Sheka-Pikus 6 x 6 Plamiltonian. It is found that the peak gain for cubic and hexagonal QW lasers is increased by about 45% and 37%, respectively, near the transparency carrier density due to the Coulomb enhancement. Also, the gain peaks with many-body effects are redshifted relative to those without many-body effects by similar to 130 meV at higher carrier densities. These results indicate the importance of the many-body effects for both cubic and hexagonal GaN/AlGaN QW lasers. (C) 1997 American Institute of Physics.

引用

页码：398 / 400

页数：3

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