Nonlinear intersubband absorption of a hot quasi-two-dimensional electron plasma studied by femtosecond infrared spectroscopy

被引：39

作者：

Lutgen, S ^{[1
]}

Kaindl, RA ^{[1
]}

Woerner, M ^{[1
]}

Elsaesser, T ^{[1
]}

Hase, A ^{[1
]}

Kunzel, H ^{[1
]}

机构：

[1] HEINRICH HERTZ INST NACHRICHTENTECH BERLIN GMBH,D-10587 BERLIN,GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.54.R17343

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transient (n=1) to (n=2) intersubband absorption of a pure electron plasma in n-type Ga0.48In0.53As/Al0.48In0.52As quantum wells is studied in femtosecond pump-probe experiments. The ultrafast dynamics of nonlinear absorption shows strong changes when tuning the midinfrared pulses over the intersubband absorption line. The nonlinear optical response is determinedby both intersubband relaxation with a time constant of 1.3 ps and the intraband dynamics of (n=1) electrons, which are monitored in an independent experiment.

引用

页码：17343 / 17346

页数：4

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