Multiharmonic Frequency-Chirped Transducers for Surface-Acoustic-Wave Optomechanics
Multiharmonic Frequency-Chirped Transducers for Surface-Acoustic-Wave Optomechanics
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DOI：
10.1103/physrevapplied.9.014004
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发表时间：
2017-08
影响因子：
4.6
通讯作者：
M. Weiß;A. Horner;E. Zallo;P. Atkinson;A. Rastelli;O. Schmidt;A. Wixforth;H. Krenner
中科院分区：
文献类型：
--
作者：
M. Weiß;A. Horner;E. Zallo;P. Atkinson;A. Rastelli;O. Schmidt;A. Wixforth;H. Krenner
声表面波已成为探测和控制凝聚态物质中各种激发的关键声子技术。在这里，宽带换能器在脉冲源和芯片上产生的“纳米地震”之间建立了稳定的锁相。自由运转脉冲激光器和声波之间的固有稳定但可调谐的锁相被用于动态应变量子点的时间域光机械光谱。这项技术可以直接适用于任何脉冲的电磁辐射源，甚至粒子，以探测结构、电子、光学或磁激励的声驱动动力学。
Surface acoustic waves have become a key phononic technology to probe and control a wide range of excitations in condensed matter. Here wide-passband transducers establish stable phase locking between a pulsed source and electrically generated ``nanoquakes'' on a chip. An inherently stable, yet tunable, phase locking between a free-running pulsed laser and the sound wave is used for time-domain optomechanical spectroscopy of a dynamically strained quantum dot. This technique can be directly adapted to any pulsed source of electromagnetic radiation, or even particles, to probe the acoustically driven dynamics of structural, electronic, optical, or magnetic excitations.