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.
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收藏
页码：64 / 66
页数：3
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