Abstract

A method is presented for the estimation of optical constants in the ultraviolet-visible-near-infrared (UV-Vis-NIR) region of nonspherical particles in a suspension at concentrations where multiple scattering is significant. The optical constants are obtained by an inversion technique using the adding-doubling method to solve the radiative transfer equation in combination with the single scattering theories for modelling scattering by nonspherical particles. Two methods for describing scattering by single scattering are considered: the T-matrix method and the approximate but computationally simpler Rayleigh-Gans-Debye (RGD) approximation. The method is then applied to obtain the optical constants of Bacillus subtilis spores in the wavelength region 400-1200 nm. It is found that the optical constants obtained using the RGD approximation matches those obtained using the T-matrix method to within experimental error.

© 2008 Optical Society of America

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    [CrossRef]
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2007 (2)

2005 (1)

2003 (1)

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

1997 (1)

1993 (1)

1978 (1)

1968 (1)

Alfano, R. R.

Alimova, A.

Arakawa, E. T.

Barber, P.

Brock, S. R.

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Gottlieb, P.

Hovenier, J. W.

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, “Overview of scattering by nonspherical particles,” in Light Scattering by Nonspherical Particles. Theory, Measurements and Applications, M. I. Mishchenko, J. W. Hovenier, L. D. Travis, and W. J. Wiscombe, eds. (Academic, 2000), pp. 40.

Hu, X. H.

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Jacobs, K. M.

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Katz, A.

Kerker, M.

M. Kerker, The Scattering of Light and other Electromagnetic Radiation (Academic, 1970), pp. 414-486.

Khare, B. N.

Lacis, A. A.

M. I. Mishchenko, L. D. Travis, and A. A. Lacis, Scattering, Absorption, and Emission of Light by Small Particles (Cambridge University, 2002).

Lu, Q. L.

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Ma, X.

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Mackowski, D. W.

M. I. Mishchenko, L. D. Travis, and D. W. Mackowski, “T-matrix codes for computing electromagnetic scattering by nonspherical particles and aggregated particles,” www.giss.nasa.gov/~crmin/t_matrix.html.

Milham, M. E.

Mishchenko, M. I.

M. I. Mishchenko, L. D. Travis, and D. W. Mackowski, “T-matrix codes for computing electromagnetic scattering by nonspherical particles and aggregated particles,” www.giss.nasa.gov/~crmin/t_matrix.html.

M. I. Mishchenko, L. D. Travis, and A. A. Lacis, Scattering, Absorption, and Emission of Light by Small Particles (Cambridge University, 2002).

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, “Overview of scattering by nonspherical particles,” in Light Scattering by Nonspherical Particles. Theory, Measurements and Applications, M. I. Mishchenko, J. W. Hovenier, L. D. Travis, and W. J. Wiscombe, eds. (Academic, 2000), pp. 40.

Prahl, S. A.

Querry, M. R.

Rudolph, E.

Steiner, J. C.

Thennadil, S. N.

Travis, L. D.

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, “Overview of scattering by nonspherical particles,” in Light Scattering by Nonspherical Particles. Theory, Measurements and Applications, M. I. Mishchenko, J. W. Hovenier, L. D. Travis, and W. J. Wiscombe, eds. (Academic, 2000), pp. 40.

M. I. Mishchenko, L. D. Travis, and A. A. Lacis, Scattering, Absorption, and Emission of Light by Small Particles (Cambridge University, 2002).

M. I. Mishchenko, L. D. Travis, and D. W. Mackowski, “T-matrix codes for computing electromagnetic scattering by nonspherical particles and aggregated particles,” www.giss.nasa.gov/~crmin/t_matrix.html.

Tuminello, P. S.

van Germert, M. J. C.

Velazco-Roa, M. A.

Wang, D. S.

Welch, A. J.

Wrobel, J. M.

Wyatt, P.

Xu, M.

Xu, R.

R. Xu, Particle Characterization: Light Scattering Techniques (Kluwer Academic, 2000).

Yang, P.

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Appl. Opt. (6)

Opt. Lett. (1)

Phys. Med. Biol. (1)

X. Ma, Q. L. Lu, S. R. Brock, K. M. Jacobs, P. Yang, and X. H. Hu, “Determination of complex refractive index of polystyrene microspheres from 370 to 1610 nm,” Phys. Med. Biol. 48, 4165-4172 (2003).
[CrossRef]

Other (5)

M. I. Mishchenko, L. D. Travis, and A. A. Lacis, Scattering, Absorption, and Emission of Light by Small Particles (Cambridge University, 2002).

M. I. Mishchenko, J. W. Hovenier, and L. D. Travis, “Overview of scattering by nonspherical particles,” in Light Scattering by Nonspherical Particles. Theory, Measurements and Applications, M. I. Mishchenko, J. W. Hovenier, L. D. Travis, and W. J. Wiscombe, eds. (Academic, 2000), pp. 40.

M. Kerker, The Scattering of Light and other Electromagnetic Radiation (Academic, 1970), pp. 414-486.

M. I. Mishchenko, L. D. Travis, and D. W. Mackowski, “T-matrix codes for computing electromagnetic scattering by nonspherical particles and aggregated particles,” www.giss.nasa.gov/~crmin/t_matrix.html.

R. Xu, Particle Characterization: Light Scattering Techniques (Kluwer Academic, 2000).

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