Size-dependent optical nonlinearities in GaN quantum dots

被引：10
|
作者：
Riblet, P [1 ]
Tanaka, S [1 ]
Ramvall, P [1 ]
Nomura, S [1 ]
Aoyagi, Y [1 ]
机构：
[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
来源：
SOLID STATE COMMUNICATIONS | 1999年 / 109卷 / 06期
关键词：
nanostructures; semiconductors; optical properties; nonlinear optics;
D O I：
10.1016/S0038-1098(98)00574-2
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We studied experimentally the influence of the size of GaN quantum dots on the exciton photoluminescence at 10 K under high optical excitation for which the spatial confinement was found to be a critical parameter for optical nonlinearities such as band-gap renormalization (BGR) and state-filling effects. As the dot size decreases, the BCR characteristic of bulk like dots becomes dominated by the state-filling nonlinearity. in addition, three-dimensional confinement is demonstrated by a comparison with a quantum well. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：377 / 381
页数：5
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