Megahertz pulse-burst laser and visualization of shock-wave/boundary-layer interaction Academic Article uri icon


  • 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


author list (cited authors)

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

citation count

  • 146

complete list of authors

  • Wu, PF||Lempert, WR||Miles, RB

publication date

  • April 2000