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17 May 1999 Basic mechanisms of formation of integral scattering indicatrix of optically soft spherical biological particles
Nickolay V. Shepelevich, Inna V. Prostakova, Valeriy N. Lopatin
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Proceedings Volume 3599, Optical Diagnostics of Biological Fluids IV; (1999) https://doi.org/10.1117/12.348379
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States
Abstract
The work is devoted to the theoretical investigation of the formation of a radiation scattered by optically soft spherical biological particles into the solid angle (Theta) o (integral indicatrix). Integral light-scattering indicatrix F in the range of the phase-shift parameter (Delta) from 0.01 to 80 and of the relative refractive index m (m equals n + i(chi )): n less than or equal to 1.2; (chi) less than or equal to 10-2 has been studied. Fraunhofer diffraction, geometric optics, Wentzel-Kramers-Brillouin approximation, the Mie theory have been applied for the analyses of the light- scattering indicatrix. The theoretical and numerical investigation reveals that the integral light-scattering indicatrix can be represented as a combination of two mechanisms, namely, Fraunhofer diffraction and geometrical optics ((Delta) greater than or equal to 3). The feasibility of determining the relative refractive index of the studied biological particles has been shown.
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Nickolay V. Shepelevich, Inna V. Prostakova, and Valeriy N. Lopatin "Basic mechanisms of formation of integral scattering indicatrix of optically soft spherical biological particles", Proc. SPIE 3599, Optical Diagnostics of Biological Fluids IV, (17 May 1999); https://doi.org/10.1117/12.348379
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KEYWORDS
Particles
Scattering
Spherical lenses
Geometrical optics
Mie scattering
Biomedical optics
Refractive index
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