Amplitude calibration of 2D mechanical resonators by nonlinear optical transduction
Amplitude calibration of 2D mechanical resonators by nonlinear optical transduction
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DOI：
10.1063/1.5009909
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发表时间：
2017-12-18
影响因子：
4
通讯作者：
Steeneken, Peter G.
中科院分区：
文献类型：
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作者：
Dolleman, Robin J.;Davidovikj, Dejan;Steeneken, Peter G.
利用法布里-珀罗涉法对机械共振进行非接触表征是研究原子薄膜力学和动力学性质的有力工具。然而，通常不执行或仅通过对器件参数(如其质量或温度)进行假设来执行幅度校准。在这项工作中，我们展示了一种校准技术，它通过检测光学换能器中的非线性引起的高次谐波来直接测量振荡幅度。利用这项技术，我们可以校准二维纳米机械谐振器的共振幅度，而不需要知道它们的机械特性、驱动力、几何距离或激光强度。由AIP出版公司出版。
Contactless characterization of mechanical resonances using Fabry-Perot interferometry is a powerful tool to study the mechanical and dynamical properties of atomically thin membranes. However, amplitude calibration is often not performed or only possible by making assumptions on the device parameters such as its mass or the temperature. In this work, we demonstrate a calibration technique that directly measures the oscillation amplitude by detecting higher harmonics that arise from nonlinearities in the optical transduction. Employing this technique, we calibrate the resonance amplitude of two-dimensional nanomechanical resonators, without requiring knowledge of their mechanical properties, actuation force, geometric distances, or the laser intensity. Published by AIP Publishing.