Nanomechanical resonators based on adiabatic periodicity-breaking in a superlattice
Nanomechanical resonators based on adiabatic periodicity-breaking in a superlattice
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基于超晶格绝热周期性破缺的纳米机械谐振器
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
N. Lanzillotti
中科院分区：
文献类型：
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作者：
F. Lamberti;M. Esmann;A. Lemaître;C. G. Carbonell;O. Krebs;I. Favero;B. Jusserand;P. Senellart;L. Lanco;N. Lanzillotti
我们提出了一种新的声腔设计，通过绝热改变GaAs/AlAs超晶格的声学性质来限制机械模式。通过高分辨率的拉曼散射测量，我们在实验上证明了在350 GHz左右的共振频率处存在一个受限声模。我们观察到实验数据和基于光弹性模型的数值模拟之间有很好的一致性。我们证明了通过改变绝热形变的大小可以调谐受限模的空间分布，从而导致其机械品质因子和拉曼散射截面的强烈变化。报道的替代限制方法可能导致新一代纳米声子和光学机械系统的发展。
We propose a novel acoustic cavity design where we confine a mechanical mode by adiabatically changing the acoustic properties of a GaAs/AlAs superlattice. By means of high resolution Raman scattering measurements, we experimentally demonstrate the presence of a confined acoustic mode at a resonance frequency around 350 GHz. We observe an excellent agreement between the experimental data and numerical simulations based on a photoelastic model. We demonstrate that the spatial profile of the confined mode can be tuned by changing the magnitude of the adiabatic deformation, leading to strong variations of its mechanical quality factor and Raman scattering cross section. The reported alternative confinement method could lead to the development of a novel generation of nanophononic and optomechanical systems.
影响因子：
3.7
作者：
Jaeger, J. V.;Scherbakov, A. V.;Bayer, M.
通讯作者：
Bayer, M.