HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Active chiral control of GHz acoustic whispering-gallery modes

Files in This Item: MBavi ビデオファイルView/Open
1.4994886.pdf948.26 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Active chiral control of GHz acoustic whispering-gallery modes
Authors: Mezil, Sylvain Browse this author
Fujita, Kentaro Browse this author
Otsuka, Paul H. Browse this author
Tomoda, Motonobu Browse this author →KAKEN DB
Clark, Matt Browse this author
Wright, Oliver B. Browse this author →KAKEN DB
Matsuda, Osamu Browse this author →KAKEN DB
Issue Date: 2-Oct-2017
Publisher: American Institute of Physics (AIP)
Journal Title: Applied physics letters
Volume: 111
Issue: 14
Start Page: 144103
Publisher DOI: 10.1063/1.4994886
Abstract: We selectively generate chiral surface-acoustic whispering-gallery modes in the gigahertz range on a microscopic disk by means of an ultrafast time-domain technique incorporating a spatial light modulator. Active chiral control is achieved by making use of an optical pump spatial profile in the form of a semicircular arc, positioned on the sample to break the symmetry of clockwise-and counterclockwise-propagating modes. Spatiotemporal Fourier transforms of the interferometrically monitored two-dimensional acoustic fields measured to micron resolution allow individual chiral modes and their azimuthal mode order, both positive and negative, to be distinguished. In particular, for modes with 15-fold rotational symmetry, we demonstrate ultrafast chiral control of surface acoustic waves in a micro-acoustic system with picosecond temporal resolution. Applications include nondestructive testing and surface acoustic wave devices.
Rights: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in and may be found at
Type: article
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

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University