Shin-ichi SATAKE^*, Tomoaki KUNUGI¹, Kazuho SATO² and Tomoyoshi ITO³

Department of Applied Electronics, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
¹Department of Nuclear Engineering, Graduate School of Engineering, Kyoto University, Yoshida, Sakyo, Kyoto 606-8501, Japan
²Toyota Industries Corp., 2-1 Toyoda cyou, Kariya, Aichi 448-8671, Japan
³Department of Medical System Engineering, Chiba University, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan

(Received January 6, 2004; Accepted March 29, 2004; Revised March 10, 2004)

Digital holographic particle tracking velocimetry (PTV) is developed by single high-speed camera and single double pulsed laser with high frequency pulses. This system can directly capture 1000 hologram fringe images for 1 second through a camera computer memory. The 3-D particle location is made of the reconstruction by using a computer hologram algorithm in a personal computer. This system can successfully be applied to instantaneous 3-D velocity measurement in the water flow with a square obstacle, and can obtain an average of 300 instantaneous velocity vectors.

Key words: holography, computational optics, optical, computer hologram, particle tracking velocimetry

^*E-mail address: satake@te.noda.tus.ac.jp