Pumping of Quantum Dots with Surface Acoustic Waves
Pumping of Quantum Dots with Surface Acoustic Waves
复制标题
用表面声波泵浦量子点
DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
H. Lipsanen
中科院分区:
文献类型:
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作者:
C. Bödefeld;A. Wixforth;J. Toivonen;M. Sopanen;H. Lipsanen
Surface acoustic waves on a semiconductor quantum well structure are accompanied by strong lateral piezo-electric fields. Those fields can ionize photo-generated excitons and trap the fragments, electron-hole pairs, in the moving lateral potential wells to the wave. We show that self-assembled quantum dots present in the structure can act as very efficient recombination centers and demonstrate the concept of a periodically pumped quantum dot.