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

Weng, H. K.; Nagakubo, A.; Watanabe, H. et al.

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

Number of Access:763（2025-08-18 23:04 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/86893

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Title
Suppression of Brillouin oscillation in transparent free-standing diamond thin films in picosecond ultrasound
Creator
CreatorName
Weng, H. K.
NRID
1000070751113 1000070751113
ORCID
0000-0001-7494-5099 0000-0001-7494-5099
researchmap permalink
nagakubo nagakubo
Scopus Author ID
55329400300 55329400300
CreatorName
Nagakubo, A.
NRID
1000090379115 1000090379115
ORCID
0000-0002-7916-3093 0000-0002-7916-3093
researchmap permalink
heijiw heijiw
Scopus Author ID
7410305922 7410305922
CreatorName
Watanabe, H.
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
CreatorName
Ogi, H.
Description
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.
Abstract
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.
Publisher
American Institute of Physics
Source Title
Applied Physics Letters
Volume (Issue)
120(11)
Page
112203
Date of Issued
2022-03-16
Language
English
Handle URL
https://hdl.handle.net/11094/86893
PISSN
00036951
eISSN
10773118
NCID
AA00543431
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1063/5.0087648
Access Rights
open access
CopyRight
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.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article