Temporal characteristics of surface-acoustic-wave-driven luminescence from a lateral p-n junction
Temporal characteristics of surface-acoustic-wave-driven luminescence from a lateral p-n junction
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横向 p-n 结表面声波驱动发光的时间特性
DOI：
10.1063/1.2753759
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发表时间：
2007
影响因子：
4
通讯作者：
A. Shields
中科院分区：
文献类型：
--
作者：
J. Gell;P. Atkinson;S. Bremner;F. Sfigakis;M. Kataoka;D. Anderson;G. Jones;C. Barnes;D. Ritchie;M. Ward;C. E. Norman;A. Shields
利用短射频脉冲研究了再生分子束外延生长的GaAsAlGaAsp-n结的表面声波驱动光发射。这种发光提供了对到达结点的信号的快速探测，使作者能够在时间上将表面声波的影响与自由空间电磁波的拾取分开。光强度的振荡在换能器的共振频率下被分解，这表明表面声波正在以分组的形式传输电子穿过结点。
Short radio frequency pulses were used to study the surface-acoustic-wave-driven light emission from a molecular beam epitaxy regrown GaAs∕AlGaAs lateral p-n junction. The luminescence provides a fast probe of the signals arriving at the junction allowing the authors to temporally separate the effect of the surface-acoustic-wave from pickup of the free space electromagnetic wave. Oscillations in the light intensity are resolved at the resonant frequency of the transducer, suggesting that the surface-acoustic-wave is transporting electrons across the junction in packets.