Effects of detection geometry on polarimetric measurements of scattered light from turbid media containing optically active glucose molecules

2005 ◽  
Author(s):  
Xinxin Guo ◽  
Michael F. G. Wood ◽  
I. A. Vitkin
Keyword(s):  
Scattered Light ◽  
Optically Active ◽  
Turbid Media

scholarly journals Optical Characterization of Homogeneous and Heterogeneous Intralipid-Based Samples

2020 ◽  
Vol 10 (18) ◽  
pp. 6234
Author(s):  
Ines Delfino ◽  
Maria Lepore ◽  
Rosario Esposito
Keyword(s):  
Optical Properties ◽  
Light Scattering ◽  
Scattered Light ◽  
Industrial Applications ◽  
Point Of View ◽  
Turbid Media ◽  
Time Resolved ◽  
Propagation Of Light ◽  
First Time

Different scattering processes take place when photons propagate inside turbid media. Many powerful experimental techniques exploiting these processes have been developed and applied over the years in a large variety of situations from fundamental and applied research to industrial applications. In the present paper, we intend to take advantage of Static Light Scattering (SLS), Dynamic Light Scattering (DLS), and Time-Resolved Transmittance (TRT) for investigating all the different scattering regimes by using scattering suspensions in a very large range of scatterer concentrations. The suspensions were prepared using Intralipid 20%, a material largely employed in studies of the optical properties of turbid media, with concentrations from 10−5% to 50%. By the analysis of the angular and temporal dependence of the scattered light, a more reliable description of the scattering process occurring in these samples can be obtained. TRT measurements allowed us to obtain information on the reduced scattering coefficient, an important parameter largely used in the description of the optical properties of turbid media. TRT was also employed for the detection of inclusions embedded in Intralipid suspensions, by using a properly designed data analysis. The present study allowed us to better elucidate the dependence of scattering properties of Intralipid suspensions in a very large concentration range and the occurrence of the different scattering processes involved in the propagation of light in turbid media for the first time to our knowledge. In so doing, the complementary contribution of SLS, DLS, and TRT in the characterization of turbid media from an optical and structural point of view is strongly evidenced.

Depolarization of Scattered Light by Optically Active Systems

1965 ◽  
Vol 69 (2) ◽  
pp. 689-691 ◽  
Author(s):  
P. F. Mijnlieff ◽  
H. Zeldenrust
Keyword(s):  
Scattered Light ◽  
Optically Active ◽  
Active Systems

Light Scattering from Fluctuations in an Optically Active Fluid

1973 ◽  
Vol 28 (6) ◽  
pp. 805-814
Author(s):  
Kin-Wah Li ◽  
John S. Dahler
Keyword(s):  
Light Scattering ◽  
Angular Dependence ◽  
Optical Activity ◽  
Scattered Light ◽  
Monochromatic Light ◽  
Optically Active ◽  
Scattering Medium ◽  
Irreducible Components ◽  
New Feature ◽  
Scattered Fields

The theory of light scattering by fluctuations has been extended to optically active fluids. The new feature is the "gyration parameter", a second rank asymmetric tensor, the fluctuations of which must be counted along with the familiar isotropic (scalar) and anisotropic (traceless and symmetric) fluctuations of the electric permeability tensor. Scattering equations are derived and solved in order to obtain the spectrum of scattered light. It is found that the angular dependence of scattering caused by fluctuations of permeability alone does not involve the propagation vectors of the incident or scattered fields whereas that which involves fluctuations of the gyration parameter depends explicitly upon these two vectors. This gyration tensor also has distinguishable effects upon the depolarization, ellipticity, and rotation or tilt of the scattered quasi-monochromatic light. The total intensity is resolved into a sum of five distinct contributions, each associated with different irreducible components of the gyration and permeability tensors and each with a different dependence upon the scattering angle and polarizations of the incident and scattered light. Experiments are suggested which emphasize effects originating from the optical activity of the scattering medium.

Efficient rejection of scattered light enables deep optical sectioning in turbid media with low-numerical-aperture optics in a dual-axis confocal architecture

2008 ◽  
Vol 13 (3) ◽  
pp. 034020 ◽  
Author(s):  
Jonathan T. C. Liu ◽  
Michael J. Mandella ◽  
James M. Crawford ◽  
Christopher H. Contag ◽  
Thomas D. Wang ◽  
...  
Keyword(s):  
Scattered Light ◽  
Numerical Aperture ◽  
Turbid Media ◽  
Optical Sectioning
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