The effect of the optical anisotropy of scattering media on the polarization state of scattered light

Sinichkin, Yu. P.; Zimnyakov, Dmitry A.; Yakovlev, D. A.; Ovchinnikova, I. A.; Spivak, A. V.; Ushakova, O. V.

doi:10.1134/s0030400x06110221

Cited by 9 publications

(6 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is also clearly seen that with the increasing concentration of glycerol the polarization state of backscattered light eventually changes its helicity, as this corresponds to the relative positions of the minima. The results are well agreed with the theoretical predictions reported in [20][21][22] and alternative experimental studies [27]. Fig.…”

supporting

confidence: 92%

Backscattering of circular polarized light from a disperse random medium influenced by optical clearing

Macdonald

Meglinski

2011

Laser Phys. Lett.

View full text Add to dashboard Cite

Strong multiple scattering of light is typical for most biological tissues and leads to the loss of initial polarization, direction, phase, and wavefront of incident optical radiation. Circular polarization survives more scattering events than the direction of its propagation, whereas the helicity of backscattered optical radiation depends noticeably on the size of scattering particles. In the current study an approach of probing a disperse random medium with the use of back-scattered circular polarized light is presented. We show that the helicity flip of circular polarized light can be observed experimentally in the tissue-like media and that it is sensitive to the direction of light propagation. The flip in helicity is clearly seeing as the polarization vector traverse of the Q -U plane of the Poincaré sphere. It has been also demonstrated, for the first time in our knowledge, that the polarization changes induced by optical clearing can be clearly observed and analyzed quantitatively by tracking the polarization vectors on the Poincaré sphere.

show abstract

supporting

confidence: 92%

Backscattering of circular polarized light from a disperse random medium influenced by optical clearing

Macdonald

Meglinski

2011

Laser Phys. Lett.

View full text Add to dashboard Cite

show abstract

“…17 The underlying birefringence that causes this tissue anisotropy thus may contribute to depolarization over and above the transport albedo effect invoked previously. Specifically in tissues, birefringence magnitude and orientation may be spatially inhomogeneous, changing in different regions of tissues/microdomains; 34,35,45,46 in these regions, polarized light undergoes additional randomization, and therefore the total depolarization increases. 15,45 Note that we specifically concentrate on depolarization phenomena here and do not analyze the derived birefringence magnitude and orientation (derived from the retardance matrix M R ), which are important in anisotropic tissues such as skeletal muscle; 33,46 an ongoing study examining birefringence phenomena in greater detail (e.g., the effects of variable spatial domains of different magnitude/ orientation of birefringence) will be reported elsewhere.…”

Section: Resultsmentioning

confidence: 99%

Quantitative correlation between light depolarization and transport albedo of various porcine tissues

et al. 2012

View full text Add to dashboard Cite

Abstract. We present a quantitative study of depolarization in biological tissues and correlate it with measured optical properties (reduced scattering and absorption coefficients). Polarized light imaging was used to examine optically thick samples of both isotropic (liver, kidney cortex, and brain) and anisotropic (cardiac muscle, loin muscle, and tendon) pig tissues in transmission and reflection geometries. Depolarization (total, linear, and circular), as derived from polar decomposition of the measured tissue Mueller matrix, was shown to be related to the measured optical properties. We observed that depolarization increases with the transport albedo for isotropic and anisotropic tissues, independent of measurement geometry. For anisotropic tissues, depolarization was higher compared to isotropic tissues of similar transport albedo, indicating birefringence-caused depolarization effects. For tissues with large transport albedos (greater than ∼0.97), backscattering geometry was preferred over transmission due to its greater retention of light polarization; this was not the case for tissues with lower transport albedo. Preferential preservation of linearly polarized light over circularly polarized light was seen in all tissue types and all measurement geometries, implying the dominance of Rayleigh-like scattering. The tabulated polarization properties of different tissue types and their links to bulk optical properties should prove useful in future polarimetric tissue characterization and imaging studies.

show abstract

“…The morphological and functional state of tissue may be effectively monitored by the spectral analysis of the polarization properties of the scattered light. 7,15,24,64,77,[168][169][170][171][172][173][174] The probing of a tissue by a linearly polarized white light beam and measuring the spectral response of co-and cross-polarized components of the backscattered light allow one not only to quantify chromophore content, but also to estimate its indepth distribution. It is important to note that tissue absorbers such as melanin in skin epidermis and hemoglobin in dermis increase the degree of the residual polarization of the backscattered light in the spectral ranges corresponding to absorbing bands of the dominate chromophores.…”

Section: Polarized Reflectance Spectroscopymentioning

confidence: 99%

Polarized light interaction with tissues

2016

View full text Add to dashboard Cite

This tutorial-review introduces the fundamentals of polarized light interaction with biological tissues and presents some of the recent key polarization optical methods that have made possible the quantitative studies essential for biomedical diagnostics. Tissue structures and the corresponding models showing linear and circular birefringence, dichroism, and chirality are analyzed. As the basis for a quantitative description of the interaction of polarized light with tissues, the theory of polarization transfer in a random medium is used. This theory employs the modified transfer equation for Stokes parameters to predict the polarization properties of single- and multiple-scattered optical fields. The near-order of scatterers in tissues is accounted for to provide an adequate description of tissue polarization properties. Biomedical diagnostic techniques based on polarized light detection, including polarization imaging and spectroscopy, amplitude and intensity light scattering matrix measurements, and polarization-sensitive optical coherence tomography are described. Examples of biomedical applications of these techniques for early diagnostics of cataracts, detection of precancer, and prediction of skin disease are presented. The substantial reduction of light scattering multiplicity at tissue optical clearing that leads to a lesser influence of scattering on the measured intrinsic polarization properties of the tissue and allows for more precise quantification of these properties is demonstrated.

show abstract

The effect of the optical anisotropy of scattering media on the polarization state of scattered light

Cited by 9 publications

References 34 publications

Backscattering of circular polarized light from a disperse random medium influenced by optical clearing

Backscattering of circular polarized light from a disperse random medium influenced by optical clearing

Quantitative correlation between light depolarization and transport albedo of various porcine tissues

Polarized light interaction with tissues

Contact Info

Product

Resources

About