Abstract
A novel holographic particle-image velocimeter system has been developed for the study of three-dimensional (3-D) fluid velocity fields. The recording system produces 3-D particle images with a resolution, a signal-to-noise ratio, an accuracy, and derived velocity fields that are comparable to high-quality two-dimensional photographic particle-image velocimetry (PIV). The high image resolution is accomplished through the use of low f-number optics, a fringe-stabilized processing chemistry, and a phase conjugate play-back geometry that compensates for aberrations in the imaging system. In addition, the system employs a reference multiplexed, off-axis geometry for the determination of velocity directions with the cross-correlation technique, and a stereo camera geometry for the determination of the three velocity components. The combination of the imaging and reconstruction subsystems makes the analysis of volumetric PIV domains feasible.
© 1994 Optical Society of America
Full Article | PDF ArticleMore Like This
John O. Scherer and Luis P. Bernal
Appl. Opt. 36(35) 9309-9318 (1997)
Jian Sheng, Edwin Malkiel, and Joseph Katz
Appl. Opt. 42(2) 235-250 (2003)
Ye Pu and Hui Meng
Appl. Opt. 44(36) 7697-7708 (2005)