Ultrafast optical nonlinearity of low-temperature-grown GaInAs/AlInAs quantum wells at wavelengths around 1.55 μm

被引：25

作者：

Biermann, K ^{[1
]}

Nickel, D

Reimann, K

Woerner, M

Elsaesser, T

Künzel, H

机构：

[1] Max Born Inst Nichtlineare Opt & Kurzzeitspektros, D-12489 Berlin, Germany

[2] Heinrich Hertz Inst Nachrichtentech Berlin GmbH, D-10587 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 11期

关键词：

D O I：

10.1063/1.1461429

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The ultrafast optical response of low-temperature-grown GaInAs/AlInAs multiple quantum wells is studied in pump-probe experiments with a femtosecond Er:fiber laser. As-grown samples doped with beryllium (concentration of 8x10(17) cm(-3)) display a nonlinear transmission change, which decays by carrier trapping with a time constant of 230 fs. Experiments with pairs of ultrashort pulses separated by 1.5 ps demonstrate a fast modulation of transmission and very small accumulation effects, making this material highly promising for all-optical switching. Substantially longer recovery times are found in annealed, Be-doped samples and in undoped samples. (C) 2002 American Institute of Physics.

引用

页码：1936 / 1938

页数：3

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