Coherent control of gigahertz surface acoustic and bulk phonons using ultrafast optical pulses
Coherent control of gigahertz surface acoustic and bulk phonons using ultrafast optical pulses
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DOI：
10.1063/1.2978197
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发表时间：
2008-09
影响因子：
4
通讯作者：
D. Hurley;R. Lewis;O. Wright;O. Matsuda
中科院分区：
文献类型：
--
作者：
D. Hurley;R. Lewis;O. Wright;O. Matsuda
我们演示了用超快光脉冲相干产生和控制千兆赫声子。两种不同的声子模式，一个表面声子模式和纵向声子模式，同时产生的纳米光刻吸收光栅在半导体衬底。研究了两种材料体系：硅和砷化镓衬底上的亚光学波长铝吸收光栅。建设性和完全相消干涉的条件，证明了使用两个泵脉冲从单一迈克尔逊干涉仪。
We demonstrate the coherent generation and control of gigahertz acoustic phonons with ultrafast optical pulses. Two distinct acoustic phonon modes, a surface acoustic phonon mode and a longitudinal acoustic phonon mode, are generated simultaneously by irradiating nanolithographic absorption gratings on semiconductor substrates. Two material systems are examined: suboptical wavelength aluminum absorption gratings on Si and GaAs substrates. Constructive and complete destructive interference conditions are demonstrated using two pump pulses derived from a single Michelson interferometer.