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arXiv · 2101.03301

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

Ya-Ru Xie·Shu-Liang Ren·Yuan-Fei Gao·Xue-Lu Liu·Ping-Heng Tan·Jun Zhang
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Abstract

The acoustic modes of diamond not only are of profound significance for studying its thermal conductivity, mechanical properties and optical properties, but also play a determined role in the performance of high-frequency and high-power acoustic wave devices. Here we report the bulk acoustic waves (BAWs) and surface acoustic waves (SAWs) of single crystal diamond by using the angle-resolved Brillouin light scattering (BLS) spectroscopy. We identify two high-velocity surface skimming bulk waves, with sound velocities of 1.277x10^6 and 1.727x10^6 cm/s, respectively. Furthermore, we conduct the relationship among the refractive index, incident angle and the velocities of BAWs propagating along an arbitrary direction. Our results may provide a valuable reference for fundamental researches and devices engineering in the community of diamond-based acoustic study.

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Ya-Ru Xie, Shu-Liang Ren, Yuan-Fei Gao, Xue-Lu Liu, Ping-Heng Tan, Jun Zhang. 2021-01-09. Measuring bulk and surface acoustic modes in diamond by angle-resolved Brillouin spectroscopy. https://doi.org/10.1007/s11433-020-1710-6.

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