COMPARISON OF OPTICAL NONLINEARITIES OF TYPE-II AND TYPE-I QUANTUM-WELLS

被引：9

作者：

MEISSNER, K ^{[1
]}

FLUEGEL, B ^{[1
]}

BINDER, R ^{[1
]}

KOCH, SW ^{[1
]}

KHITROVA, G ^{[1
]}

PEYGAMBARIAN, N ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 03期

关键词：

D O I：

10.1063/1.105614

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have performed low-temperature femtosecond pump and probe experiments on GaAs/AlAs type II and GaAs/AlGaAs type I multiple quantum wells of similar well sizes. The measurements are analyzed using a many-body theory appropriate for both types of systems. It is found that the type I and type II nonlinearities are very similar at early times after excitation. However, the very fast ( < 1 ps) GAMMA to X electron scattering in the type II samples causes pronounced differences at later times, allowing the observation of hole relaxation in the type II samples.

引用

页码：259 / 261

页数：3

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