学術雑誌論文

学術雑誌論文

text

Applied Physics Letters. 2022, 120(11), p. 112203

Suppression of Brillouin oscillation in transparent free-standing diamond thin films in picosecond ultrasound

American Institute of Physics

英語

text

2022-03-16

https://doi.org/10.1063/5.0087648

H. K. Weng, A. Nagakubo, H. Watanabe, and H. Ogi, "Suppression of Brillouin oscillation in transparent free-standing diamond thin films in picosecond ultrasound", Appl. Phys. Lett. 120, 112203 (2022) https://doi.org/10.1063/5.0087648.

Brillouin oscillation appears in picosecond ultrasonics for a transparent specimen because of backward light scattering by moving strain pulse. Its amplitude is comparable with those of other responses, such as pulse-echo signals and through-thickness resonance, obscuring these non-Brillouin-oscillation responses. We here find that Brillouin oscillation can be suppressed in a transparent free-standing film by coating both sides with a metallic thin film of appropriate thickness and that this peculiar behavior is caused by strain pulses generated on both sides with a slight phase difference. This phenomenon allowed us to fabricate a Brillouin-oscillation-free diamond free-standing film, which showed a high capability for sensor applications.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (citation of published article) and may be found at https://doi.org/10.1063/5.0087648.

86893

Suppression of Brillouin oscillation in transparent free-standing diamond thin films in picosecond ultrasound

American Institute of Physics

英語

2022-03-16

Applied Physics Letters

120

11

112203

https://doi.org/10.1063/5.0087648

https://hdl.handle.net/11094/86893