Journal
APPLIED OPTICS
Volume 47, Issue 25, Pages 4501-4508Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.47.004501
Keywords
-
Categories
Funding
- NASA Microgravity Fluid Physics Program [NNCO5GA45G, NNCO5GA37G]
- National Science Foundation [CTS-0112514]
Ask authors/readers for more resources
To apply digital holography to the measurement of three-dimensional dense particle fields in large facilities, we have developed a hybrid digital holographic particle-imaging system. The technique combines the advantages of off-axis (side) scattering in suppressing speckle noise and on-axis (in-line) recording in lowering the digital sensor resolution requirement. A camera lens is attached to the digital sensor to compensate for the weak object wave from side scattering over a large recording distance. A simple numerical reconstruction algorithm is developed for holograms recorded with a lens without requiring complex and impractical mathematical corrections. We analyze the effect of image sensor resolution and off-axis angle on system performance and quantify the particle positioning accuracy of the system. The holographic system is successfully applied to the study of inertial particle clustering in isotropic turbulence. (C) 2008 Optical Society of America.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available