Observation of Franz-Keldysh oscillations in InP self-assembled quantum dot systems

被引：4

作者：

Masumoto, Y ^{[1
]}

Davydov, V

Ignatiev, I

Ren, HW

Sugou, S

机构：

[1] ERATO, Tsukuba Res Consortium, Single Quantum Dot Project, Tsukuba, Ibaraki 3002635, Japan

[2] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

[3] NEC Corp Ltd, Optoelect Res Labs, Tsukuba, Ibaraki 3050841, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1999年 / 38卷 / 1B期

关键词：

InP; self-assembled quantum dot; Franz-Keldysh oscillation; built-in electric field;

D O I：

10.1143/JJAP.38.563

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Distinct Franz-Keldysh oscillations were observed in the nonlinear reflection spectra of heterostructures with InP self-assembled quantum dots measured by the pump-probe method. These oscillations showed the presence of a built-in electric field of about 30 kV/cm. The built-in electric field is considered to originate from the electric charge captured by the structural defects on the dot interface. The estimated areal density of the electric charge is about 2 x 10(11) cm(-2-). Electroreflectance showed nonmonotonic changes with the change in applied bias.

引用

页码：563 / 565

页数：3

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