… Wave Laser Measurements Wave-front measurements of the TWT boundary layer were also
made using a collimated, continuous-wave (CW) laser beam and used to compare with the …

… In this paper the results of an effort to measure the aero-optical effect of a boundary layer
using the light from a LIB spark are presented. The investigation is significant in several …

… shock wave and boundary layer in supersonic and hypersonic … The laser-induced breakdown
method [67] generates a … dissertation to acquire the wavefront propagating through the flow …

… a supersonic shock wave. The … size of the hydrophone (compared with the shock wave front)
can influence the propagation of the shock wave, introducing distortion in the measurement. …

… measure convection velocities in supersonic free jets [45, 47, 48, 51], the flowfield generated
by a laser induced breakdown … strength of the shock wave front will progressively become …

… Furthermore, although the tests showed that the optical aberration of the shear layer
could be accurately measured using the technique, the optical effect of the shear layer was …

… propagation direction) for the starting kernel from our past imaging measurements [31]. We
… a perfectly spherical shock wave front. However, this is not true for a typical laser spark that …

… in supersonic facilities (see, eg, Laufer [3] or Phillips [4]). … laser pulse energy was measured
in front of and behind the … the spatial extensions and the wave front angle of an “average …

… In the first experiment, a laser-induced breakdown spark … used to measure density disturbances
in the boundary layer of … gradient in the index of refraction across the shock wave front. …

… to measure the density perturbations in supersonic blowdown … The boundary layers in
SBR-50 were previously measured to … using a Shack–Hartmann wave-front sensor. This range of …