Particle measurement with digital holography

Mike Adams; Thomas M. Kreis; Werner P. O. Jueptner

doi:10.1117/12.360996

9 September 1999 Particle measurement with digital holography

Mike Adams, Thomas M. Kreis, Werner P. O. Jueptner

Proceedings Volume 3823, Laser Metrology and Inspection; (1999) https://doi.org/10.1117/12.360996
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

Digital recording of holograms followed by numerical reconstruction of the wave field offers new alternatives in particle diagnostics. A plane wave passes a particle stream and the hologram is recorded directly by a CCD-sensor without any focusing optics. The reconstruction of the particle distribution and velocity from the recorded hologram is done numerically. Multiple holograms of the particle stream are recorded at a single instant of time from different directions. By evaluating these holograms independently it is possible to determine the 3D distribution and velocity of particles with a very high accuracy.

Citation Download Citation

Mike Adams, Thomas M. Kreis, and Werner P. O. Jueptner "Particle measurement with digital holography", Proc. SPIE 3823, Laser Metrology and Inspection, (9 September 1999); https://doi.org/10.1117/12.360996

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