Anomalous reflection and transmission of surface acoustic waves at a crystal edge via coupling to leaky wedge waves
- Surface acoustic waves are propagated toward the edge of an anisotropic elastic medium (a silicon crystal), which supports leaky waves with a high degree of localization at the tip of the edge. At an angle of incidence corresponding to phase matching with this leaky wedge wave, a sharp peak in the reflection coefficient of the surface wave was found. This anomalous reflection is associated withSurface acoustic waves are propagated toward the edge of an anisotropic elastic medium (a silicon crystal), which supports leaky waves with a high degree of localization at the tip of the edge. At an angle of incidence corresponding to phase matching with this leaky wedge wave, a sharp peak in the reflection coefficient of the surface wave was found. This anomalous reflection is associated with efficient excitation of the leaky wedge wave. In laser ultrasound experiments, surface acoustic wave pulses were excited and their reflection from the edge of the sample and their partial conversion into leaky wedge wave pulses was observed by optical probe-beam deflection. The reflection scenario and the pulse shapes of the surface and wedge-localized guided waves, including the evolution of the acoustic pulse traveling along the edge, have been confirmed in detail by numerical simulations.…
Document Type: | Article (reviewed) |
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Zitierlink: | https://opus.hs-offenburg.de/5378 | Bibliografische Angaben |
Title (English): | Anomalous reflection and transmission of surface acoustic waves at a crystal edge via coupling to leaky wedge waves |
Author: | Pavel Dmitrievich PupyrevStaff MemberORCiDGND, Alexey M. LomonosovStaff MemberORCiDGND, Ilya Nedospasov, Andreas MayerStaff MemberGND |
Year of Publication: | 2021 |
Publisher: | AIP Publishing |
First Page: | 021902-1 |
Last Page: | 021902-5 |
Article Number: | 021902 |
Parent Title (English): | Applied Physics Letters |
Volume: | 119 |
Issue: | 2 |
ISSN: | 0003-6951 (Print) |
ISSN: | 1077-3118 (Online) |
DOI: | https://doi.org/doi.org/10.1063/5.0051060 |
Language: | English | Inhaltliche Informationen |
Institutes: | Fakultät Wirtschaft (W) |
Institutes: | Bibliografie |
Tag: | Optical phase matching; Silicon crystal; Surface acoustic waves; Wave propagation; Waveguides | Formale Angaben |
Open Access: | Closed Access |
Licence (German): | Urheberrechtlich geschützt |