A method for the frequency control in time-resolved two-dimensional gigahertz surface acoustic wave imaging

Kaneko, Shogo; Tomoda, Motonobu; Matsuda, Osamu

doi:10.1063/1.4863195


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A method for the frequency control in time-resolved two-dimensional gigahertz surface acoustic wave imaging

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/56192

Title:	A method for the frequency control in time-resolved two-dimensional gigahertz surface acoustic wave imaging
Authors:	Kaneko, Shogo Browse this author
	Tomoda, Motonobu Browse this author
	Matsuda, Osamu Browse this author →KAKEN DB
Issue Date:	Jan-2014
Publisher:	American Institute of Physics
Journal Title:	AIP advances
Volume:	4
Issue:	1
Start Page:	017124-1
End Page:	017124-8
Publisher DOI:	10.1063/1.4863195
Abstract:	We describe an extension of the time-resolved two-dimensional gigahertz surface acoustic wave imaging based on the optical pump-probe technique with periodic light source at a fixed repetition frequency. Usually such imaging measurement may generate and detect acoustic waves with their frequencies only at or near the integer multiples of the repetition frequency. Here we propose a method which utilizes the amplitude modulation of the excitation pulse train to modify the generation frequency free from the mentioned limitation, and allows for the first time the discrimination of the resulted upper- and lower-side-band frequency components in the detection. The validity of the method is demonstrated in a simple measurement on an isotropic glass plate covered by a metal thin film to extract the dispersion curves of the surface acoustic waves.
Rights:	http://creativecommons.org/licenses/by/3.0/
Type:	article
URI:	http://hdl.handle.net/2115/56192
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松田理

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