2024-03-28T12:57:43Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/341192022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139Coherent shear phonon generation and detection with picosecond laser acousticsMatsuda, O.Wright, O. B.Hurley, D. H.Gusev, V.Shimizu, K.PACS=92.60.TaPACS=78.35.+cPACS=78.47.jcPACS=78.20.Hp427Measurements on a film of silica on crystalline zinc using picosecond laser acoustics are theoretically analyzed to quantitatively explain the generation and detection of picosecond shear and longitudinal-acoustic waves. The theory encompasses the scattering of obliquely incident probe light of arbitrary polarization by a depth-dependent anisotropic permittivity modulation in a multilayer, including terms arising from the photoelastic effect, interface displacements, and local rotations. Sound velocities, ultrasonic attenuation, and photoelastic constants are experimentally derived.The American Physical SocietyJournal Articleapplication/pdfhttp://hdl.handle.net/2115/34119https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/34119/1/Matsuda_prb2008.pdf1098-01211550-235XAA11187113Physical Review. B, Condensed Matter and Materials Physics77222241102008-06-20enginfo:doi/10.1103/PhysRevB.77.224110© 2008 American Physical Societypublisher