Pulse-induced quantum interference of intersubband transitions in coupled quantum wells

被引：42

作者：

Müller, T ^{[1
]}

Parz, W ^{[1
]}

Strasser, G ^{[1
]}

Unterrainer, K ^{[1
]}

机构：

[1] Vienna Tech Univ, Inst Festkorperelektron, A-1040 Vienna, Austria

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 01期

关键词：

D O I：

10.1063/1.1638881

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the measurement of the transient intersubband absorption in a coupled quantum well semiconductor structure. Pulsed interband excitation is used to prepare a coherent population in the two lowest states of a three level system of electronic subbands. The time-dependent absorption to the upper state is probed by midinfrared time-domain spectroscopy. For certain pump-probe delay times we observe in the intersubband absorption spectra typical signatures of quantum interference: regions with reduced or enhanced absorption. (C) 2004 American Institute of Physics.

引用

页码：64 / 66

页数：3

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