Megahertz Pulse-Burst Laser and Visualization of Shock-Wave/Boundary-Layer Interaction Academic Article uri icon

abstract

  • The development and application of a Nd:YAG pulse-burst laser system, which is capable of operating at up to 1-MHz pulse repetition rate with high pulse energy and narrow spectral linewidth, is presented. The laser system can generate a burst of from 1 to 99 pulses over a maximum time interval of 100 s. The average single pulse energy at 1.064 is 10 mJ. This laser is paired with a new megahertz-rate charge-coupled device framing camera to obtain images of a Mach 2.5 flow over a 14-deg angle wedge at a 500-kHz repetition rate. The sequential images clearly show the dynamic interaction between the incoming turbulent boundary layer and the unsteady oblique shock wave.

published proceedings

  • AIAA Journal

author list (cited authors)

  • Wu, P., Lempert, W. L., & Miles, R. B.

publication date

  • January 1, 2000 11:11 AM