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.
Angle-Resolved Cryogenic Brillouin-Mandelstam Spectroscopy of Surface and Bulk Acoustic Phonons in Diamond
University of California, Los Angeles（加州大学洛杉矶分校）；California NanoSystems Institute, University of California, Los Angeles（加州纳米系统研究所）；Auburn University（奥本大学）；Center for Quantum Science and Engineering, University of California, Los Angeles（量子科学与工程中心）
Critical behavior of the damping rate of GHz acoustic phonons in SrTiO3 at the antiferrodistortive phase transition measured by time- and frequency-resolved Brillouin scattering
Acoustic Phonon Characteristics of Gallium Oxide Single Crystals Investigated with Brillouin-Mandelstam Light Scattering Spectroscopy
University of California, Los Angeles（加州大学洛杉矶分校）；California NanoSystems Institute, University of California, Los Angeles（加州大学洛杉矶分校加利福尼亚纳米系统研究所）；Auburn University（奥本大学）；University of California, Riverside（加州大学河滨分校）；Arizona State University（亚利桑那州立大学）
Revealing sub-μm inhomogeneities and μm-scale texture in H2O ice at Megabar pressures via sound velocity measurements by time-domain Brillouin scattering
Stroboscopic X-ray Diffraction Microscopy of Dynamic Strain in Diamond Thin-film Bulk Acoustic Resonators for Quantum Control of Nitrogen Vacancy Centers
Time-domain Brillouin scattering theory for probe light and acoustic beams propagating at an angle and acousto-optic interaction at material interfaces
Influence of incommensurate structure on the elastic constants of crystalline Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ by Brillouin light scattering spectroscopy
利用布里渊光散射光谱研究了晶态高$T_c$超导体Bi $_2$ Sr $_2$ CaCu $_2$ O $_{8+δ}$的室温弹性。一套完整的最佳估计的弹性常数，获得了使用声学声子速度和弹性常数之间的关系，以及一个简单的表达式有关的晶体弹性常数$C_{22}$相应的常数的组成无公度亚晶格。后一种关系，这是在本工作中推导和验证，具有重要的意义，为那些研究无公度系统，因为它似乎可以应用在其一般形式的任何复合无公度晶体。在这项工作中得到的结果也是一致的亚晶格分配的Bi $_2$ Sr $_2$ O $_4$和CaCu $_2$ O $_4$在以前的布里渊散射研究报告。
Acoustic and Optical Phonon Frequencies and Acoustic Phonon Velocities in Silicon-Doped Aluminum Nitride Thin Films
University of California, Los Angeles（加州大学洛杉矶分校）；California NanoSystems Institute, University of California, Los Angeles（加州大学洛杉矶分校加利福尼亚纳米系统研究所）；Arizona State University（亚利桑那州立大学）；Auburn University（奥本大学）
John A. Paulson School of Engineering and Applied Sciences, Harvard University（哈佛大学约翰·A·保尔森工程与应用科学学院）；Department of Electrical Engineering and Computer Science, Syracuse University（雪城大学电气与计算机工程系）；Department of Physics, Harvard University（哈佛大学物理系）
