Surface acoustic waves are used in magnetism to initiate magnetization switching, in microfluidics to control fluids and particles in lab-on-a-chip devices, and in quantum systems like two-dimensional electron gases, quantum dots, photonic cavities, and single carrier transport systems. For all these applications, an easy tool is highly needed to measure precisely the acoustic wave amplitude in order to understand the underlying physics and/or to optimize the device used to generate the acoustic waves. We present here a method to determine experimentally the amplitude of surface acoustic waves propagating on Gallium Arsenide generated by an interdigitated transducer. It relies on Vector Network Analyzer measurements of S parameters and modeling using the Coupling-Of-Modes theory. The displacements obtained are in excellent agreement with those measured by a very different method based on X-ray diffraction measurements.
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28 January 2017
Research Article|
January 26 2017
Vector network analyzer measurement of the amplitude of an electrically excited surface acoustic wave and validation by X-ray diffraction
I. S. Camara
;
I. S. Camara
a)
1
Sorbonne Universités
, UPMC Univ Paris 06, CNRS-UMR 7588, Institut des Nanosciences de Paris, 75005 Paris, France
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B. Croset
;
B. Croset
1
Sorbonne Universités
, UPMC Univ Paris 06, CNRS-UMR 7588, Institut des Nanosciences de Paris, 75005 Paris, France
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L. Largeau
;
L. Largeau
2Centre de Nanosciences et de Nanotechnologies, CNRS, Univ. Paris-Sud,
Université Paris-Saclay
, 91460 Marcoussis, France
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P. Rovillain;
P. Rovillain
1
Sorbonne Universités
, UPMC Univ Paris 06, CNRS-UMR 7588, Institut des Nanosciences de Paris, 75005 Paris, France
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L. Thevenard;
L. Thevenard
1
Sorbonne Universités
, UPMC Univ Paris 06, CNRS-UMR 7588, Institut des Nanosciences de Paris, 75005 Paris, France
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J.-Y. Duquesne
J.-Y. Duquesne
1
Sorbonne Universités
, UPMC Univ Paris 06, CNRS-UMR 7588, Institut des Nanosciences de Paris, 75005 Paris, France
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a)
Electronic mail: ibrahima.s.camara@gmail.com
J. Appl. Phys. 121, 044503 (2017)
Article history
Received:
October 13 2016
Accepted:
January 13 2017
Citation
I. S. Camara, B. Croset, L. Largeau, P. Rovillain, L. Thevenard, J.-Y. Duquesne; Vector network analyzer measurement of the amplitude of an electrically excited surface acoustic wave and validation by X-ray diffraction. J. Appl. Phys. 28 January 2017; 121 (4): 044503. https://doi.org/10.1063/1.4974947
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