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Proceedings Paper

Polarized-type phase Doppler method for simultaneous measurements of particle velocity, diameter, and refractive index
Author(s): Naomichi Yokoi; Yoshihisa Aizu; Hiromichi Mishina
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Paper Abstract

A new polarized-type phase Doppler method is proposed for simultaneous measurements of particle size, velocity and refractive index on the basis of the phases of two polarized Doppler beat signals in a single scattering direction. Light scattered by a moving particle is divided into two rays, which are then detected with different polarization angles to transmit dominantly reflected or refracted rays. Signal phases of these two rays are measured with respect to the phase of beat signal obtained from the reference detector in the scattering plane. The particle diameter can be obtained from the phase of the reflected ray, whereas the particle refractive index can be determined from the phase ratio of the reflected and refracted rays. We carried out numerical simulations and experiments to confirm the usefulness of the prosed method.

Paper Details

Date Published: 13 June 2001
PDF: 6 pages
Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); doi: 10.1117/12.429607
Show Author Affiliations
Naomichi Yokoi, Muroran Institute of Technology (Japan)
Yoshihisa Aizu, Muroran Institute of Technology (Japan)
Hiromichi Mishina, Muroran Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 4317:
Second International Conference on Experimental Mechanics
Fook Siong Chau; Chenggen Quan, Editor(s)

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