Subpicosecond photocarrier lifetimes in GaSb/ErSb nanoparticle superlattices at 1.55 μm

被引：14

作者：

Hanson, MP ^{[1
]}

Driscoll, DC

Zimmerman, JD

Gossard, AC

Brown, ER

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, ECE Dept, Santa Barbara, CA 93106 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 15期

关键词：

D O I：

10.1063/1.1805711

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate subpicosecond photocarrier lifetimes at 1.55 mum in GaSb/ErSb nanoparticle superlattices grown by molecular beam epitaxy. Pump-probe measurements were made with a 1.55 mum mode-locked laser in transmission geometry to determine the photocarrier lifetime. The lifetime is found to be dependent on the size of the ErSb particles, amount of ErSb, and the distance between layers of particles. Through manipulation of these three parameters the photocarrier lifetime can be tuned down to less than 300 fs, the temporal limit of our experiment. (C) 2004 American Institute of Physics.

引用

页码：3110 / 3112

页数：3

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