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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 3 — Feb. 6, 2006
  • pp: 1044–1054

Quick and easy measurement of particle size of Brownian particles and plankton in water using a self-mixing laser

Seiichi Sudo, Yoshihiko Miyasaka, Kenju Otsuka, Yohei Takahashi, Tomohiko Oishi, and Jing-Yuan Ko  »View Author Affiliations

Optics Express, Vol. 14, Issue 3, pp. 1044-1054 (2006)

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We describe a method for quickly and easily measuring the size of small particles in suspensions. This method uses a self-mixing laser Doppler measurement with a laser-diode-pumped, thin-slice LiNdP4O12 laser with extremely high optical sensitivity. The average size of the particles in Brownian motion is determined by a Lorentz fitting of the measured power spectrum of the modulated self-mixing laser light resulting from the motion. The dependence of the measured power spectra on particle size and concentration was quantitatively identified from the results of a systematic investigation of small polystyrene latex particles with different diameters and concentrations. The sizes and ratios of particles with different diameters mixed in water were accurately measured. An application of this self-mixing laser method for estimation of the average size of plankton in seawater showed that it is a practical method for characterizing biological species.

© 2006 Optical Society of America

OCIS Codes
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(140.3580) Lasers and laser optics : Lasers, solid-state
(160.5470) Materials : Polymers
(170.1420) Medical optics and biotechnology : Biology
(290.1350) Scattering : Backscattering
(290.4020) Scattering : Mie theory

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: October 3, 2005
Revised Manuscript: December 16, 2005
Manuscript Accepted: December 17, 2005
Published: February 6, 2006

Virtual Issues
Vol. 1, Iss. 3 Virtual Journal for Biomedical Optics

Seiichi Sudol, Yoshihiko Miyasaka, Kenju Otsuka, Yohei Takahashi, Tomohiko Oishi, and Jing-Yuan Ko, "Quick and easy measurement of particle size of Brownian particles and planktons in water using a self-mixing laser," Opt. Express 14, 1044-1054 (2006)

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  1. B. J. Berne and R. Pecora, Dynamic Light Scattering with Applications to Chemistry, Biology, and Physics (Dover, NY, 2000).
  2. H. Z. Cummins, N. Knable, and Y. Yeh, “Observation of diffusion broadening of Rayleight scattered light,” Phys. Rev. Lett. 12, 150–153 (1964). [CrossRef]
  3. R. C. Youngquist, S. Carr, and D. E. N. Davies, “Optical coherence-domain reflectometry: a new optical evaluation technique,” Opt. Lett. 12, 158–160 (1987). [CrossRef] [PubMed]
  4. D. A. Boas, K. K. Bizheva, and A. M. Siegel, “Using dynamic low-coherence interferometry to image Brownian motion with highly scattering media,” Opt. Lett. 23, 319–321 (1998). [CrossRef]
  5. M. Harris, G. N. Pearson, C. A. Hill, and J. M. Vaughan, “The fractal character of Gaussian-Lorentzian light,” Opt. Commun. 116, 15–19 (1995). [CrossRef]
  6. K. Otsuka, K. Abe, J.-Y. Ko, and T.-S. Lim, “Real-time nanometer-vibration measurement with a self-mixing microchip solid-state laser,” Opt. Lett. 27, 1339–1341 (2002). [CrossRef]
  7. K. Abe, K. Otsuka, and J.-Y. Ko, “Self-mixing laser Doppler vibrometry with high optical sensitivity: application to real-time sound reproduction,” New J. Phys. 5, 8.1–8.9 (2003). [CrossRef]
  8. K. Otsuka, K. Abe, N. Sano, S. Sudo, and J.-Y. Ko, “Two-channel self-mixing laser Doppler measurement with carrier-frequency-division multiplexing,” Appl. Opt. 44, 1709–1714 (2005). [CrossRef] [PubMed]
  9. Z. Sun, C. D. Tomlin, and E. M. Sevick-Muraca, “Approach for particle sizing in dense polydisperse colloidal suspension using multiple scattered light," Langmuir 17, 6142–6147 (2001). [CrossRef]
  10. L. B. Aberle and W. Staude, “Three-dimensional cross correlation technique: influence of multiply scattered light in the Rayleigh-Gans regime,” Phys. Chem. Chem. Phys. 1, 3917–3921 (1999). [CrossRef]
  11. R. Xu, Particle Characterization: Light Scattering Methods (Kluwer, London, 2000).
  12. L. B. Aberle, P. Hülstede, S. Wiegand, W. Schöer, and W. Staude, “Effective suppression of multiply scattered light in static and dynamic light scattering,” Appl. Opt. 37, 6511–6524 (1998). [CrossRef]
  13. K. A. Stacey, Light-scattering in Physical Chemistry (Buttler Worth Scientific Publications, London, 1956).
  14. M. Bertero, P. Boccacci, and E.R. Pike, "On the recovery and resolution of exponential relaxation rates from experimental data: a singular-value analysis of the Laplace transform inversion in the presence of noise,” Proc. Royal Soc. London A 383, 15–29 (1982). [CrossRef]

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