Active chiral control of GHz acoustic whispering-gallery modes
- Journal:
- Applied Physics Letters
- Published:
- DOI:
- 10.1063/1.4994886
- Affiliations:
- 2
- Authors:
- 7
Research Highlight
A wave of new applications
© MEHAU KULYK/Getty
Scientists have developed a method that uses pulses of light to control the properties of sound waves, paving the way for new devices for a wide range of sensing applications, according to a study in Applied Physics Letters.
Acoustic whispering-gallery modes (WGMs) are sound waves that, due to continuous internal reflection, are confined within a cavity. Despite their use in sensing technologies and testing pipes, few studies have been undertaken to investigate how their properties can be controlled.
Led by researchers from Hokkaido University in Japan, a team of Japanese and British scientists have used ultrafast laser acoustics to control the direction of surface-acoustic WGMs in order to measure the difference in amplitude between clockwise and counterclockwise waves, which could lead to new devices for sensing and testing technologies.
References
- Appl. Phys. Lett. 111, 144103 (2017). doi: 10.1063/1.4994886
Institutions | Authors | Share |
---|---|---|
Hokkaido University, Japan | 0.86 | |
The University of Nottingham (UoN), United Kingdom (UK) | 0.14 |