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Chinese Journal of High Pressure Physics  > 2011  >  25(5): 416-420 .
MA Yun, ZHANG Yi, LI Jia-Bo, CAI Ling-Cang, LI Jian-Feng, LIU Lei, JING Qiu-Min, WANG Zhi-Gang, WANG Xiang, WENG Ji-Dong, et al.. High Pressure Sound Velocity Measurement of Material in DAC Using Laser Ultrasonics Technique[J]. Chinese Journal of High Pressure Physics, 2011, 25(5): 416-420 . doi: 10.11858/gywlxb.2011.05.006
Citation: MA Yun, ZHANG Yi, LI Jia-Bo, CAI Ling-Cang, LI Jian-Feng, LIU Lei, JING Qiu-Min, WANG Zhi-Gang, WANG Xiang, WENG Ji-Dong, et al.. High Pressure Sound Velocity Measurement of Material in DAC Using Laser Ultrasonics Technique[J]. Chinese Journal of High Pressure Physics, 2011, 25(5): 416-420 . doi: 10.11858/gywlxb.2011.05.006
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High Pressure Sound Velocity Measurement of Material in DAC Using Laser Ultrasonics Technique

doi: 10.11858/gywlxb.2011.05.006

  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

More Information
  • Corresponding author: MA Yun
  • Received Date: 29 Mar 2010
  • Rev Recd Date: 29 Apr 2010
  • Publish Date: 15 Oct 2011
    Abstract
  • A prototype laser-based ultrasound system is designed and built to measure the sound velocity of samples at high pressure in a diamond anvil cell. The system uses a Q-switch laser with 6.3 ns pulse width for excitation of broadband ultrasonic waves, and an optical fiber displacement and velocity mixing interferometer for detection. Both longitudinal acoustic wave velocity and in-situ thickness of copper at the pressure of 2.6 GPa are obtained by this all-optical pump-probe technique, which does not require any information beyond that contained in the signal itself.

     

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