Measuring bulk and surface acoustic modes in diamond by angle-resolved Brillouin spectroscopy

The acoustic modes of diamond are not only of profound significance for studying its thermal conductivity, mechanical properties, and optical properties, but also play a definite role in the performance of high-frequency and high-power acoustic wave devices. Here, we report on the bulk acoustic wave...

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Bibliographic Details
Published in:Science China. Physics, mechanics & astronomy mechanics & astronomy, 2021-08, Vol.64 (8), p.287311, Article 287311
Main Authors: Xie, YaRu, Ren, ShuLiang, Gao, YuanFei, Liu, XueLu, Tan, PingHeng, Zhang, Jun
Format: Article
Language:English
Subjects:
Astronomy
Chemical vapor deposition
Classical and Continuum Physics
Diamond crystals
Diamonds
Heat conductivity
Lasers
Light
Light scattering
Measurement
Mechanical properties
Microelectromechanical systems
Observations and Techniques
Optical properties
Physics
Physics and Astronomy
Power
Saws
Science
Single crystals
Spectroscopy
Spectrum analysis
Surface acoustic waves
Thermal conductivity
Velocity
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Summary:The acoustic modes of diamond are not only of profound significance for studying its thermal conductivity, mechanical properties, and optical properties, but also play a definite role in the performance of high-frequency and high-power acoustic wave devices. Here, we report on the bulk acoustic waves (BAWs) and surface acoustic waves (SAWs) of single-crystal diamond using angle-resolved Brillouin light scattering (BLS) spectroscopy. We identify two high-speed surface skimming bulk waves (SSBW) with acoustic velocities of 1.277×10 6 and 1.727×10 6 cm/s, respectively. Furthermore, we obtain the relationship between the velocity of arbitrary BAWs and that of BAWs propagating along the high-symmetric axis at different incident angles. In the community of diamond-based acoustic studies, our results may provide a valuable reference for fundamental research and device engineering.
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-020-1710-6