Single frame holographic particle image velocimetry

Lisa Dixon; Fook Chiong Cheong; David G. Grier

doi:10.1117/12.840534

10 February 2010 Single frame holographic particle image velocimetry

Lisa Dixon, Fook Chiong Cheong, David G. Grier

Proceedings Volume 7619, Practical Holography XXIV: Materials and Applications; 761904 (2010) https://doi.org/10.1117/12.840534
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

We present a novel method for single frame particle image velocimetry of micron scale spheres based on holographic video microscopy. Our approach takes advantage of the blurring that recorded holograms suffer when a sphere moves during the exposure period of the camera. By measuring the angular variance in intensity of the blurred hologram, we extract a modelindependent metric for the particle velocity. We find this to be accurate for speeds that permit characterization of other properties of the sphere, such as radius and refractive index through Lorenz-Mie mocroscopy. Singl-frame holographic velocimetry yields information on the dynamics of a particle, without sacrificing any other measurements.

Citation Download Citation

Lisa Dixon, Fook Chiong Cheong, and David G. Grier "Single frame holographic particle image velocimetry", Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 761904 (10 February 2010); https://doi.org/10.1117/12.840534

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