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Chinese Journal of Lasers, Volume. 47, Issue 1, 0105004(2020)

Influence of Particle Shape on Polarization Characteristics of Backscattering Light in Turbid Media

Kuntao Ye1、*, Musha Ji'E1, and Shengjie Zhai2
Author Affiliations
  • 1School of Science, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, China
  • 2Department of Mechanical Engineering, University of Nevada, Las Vegas, Las Vegas NV 89154, USA
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (32)
    Cited By (10)
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    Figures & Tables(13)
    Schematic of turbid medium model comprising randomly oriented non-spherical particles

    Fig. 1. Schematic of turbid medium model comprising randomly oriented non-spherical particles

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    Flow chart of improved vector Monte Carlo algorithm

    Fig. 2. Flow chart of improved vector Monte Carlo algorithm

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    Diagram of meridian planes

    Fig. 3. Diagram of meridian planes

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    Single-scattering phase function of Rayleigh scattering particles with different shapes

    Fig. 4. Single-scattering phase function of Rayleigh scattering particles with different shapes

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    Influence of particle shape on backscattering light from Rayleigh scattering medium. (a) Difference of polarization degree Δdiff of backscattering light as a function of optical thickness of medium; (b) total intensity I of backscattering light as a function of optical thickness of medium; (c) V component of backscattering light of circularly-polarized light as a function of optical thickness of medium; (d) Q component of backscattering light of linearly-po

    Fig. 5. Influence of particle shape on backscattering light from Rayleigh scattering medium. (a) Difference of polarization degree Δdiff of backscattering light as a function of optical thickness of medium; (b) total intensity I of backscattering light as a function of optical thickness of medium; (c) V component of backscattering light of circularly-polarized light as a function of optical thickness of medium; (d) Q component of backscattering light of linearly-po

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    Single-scattering phase function of Mie scattering particles with different shapes

    Fig. 6. Single-scattering phase function of Mie scattering particles with different shapes

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    Δdiff of backscattering light from Mie-scattering-particle media with different shapes as a function of optical thickness

    Fig. 7. Δdiff of backscattering light from Mie-scattering-particle media with different shapes as a function of optical thickness

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    Influence of Mie-scattering-particle shape on total intensity I and Stokes vector components Q and V of backscattering light. (a) Total intensity I of backscattering light as a function of optical thickness of medium; (b) component V of backscattering light as a function of optical thickness of medium when circularly-polarized light is incident; (c) component Q of backscattering light as a function of optical thickness of medium when linearly-polarized l

    Fig. 8. Influence of Mie-scattering-particle shape on total intensity I and Stokes vector components Q and V of backscattering light. (a) Total intensity I of backscattering light as a function of optical thickness of medium; (b) component V of backscattering light as a function of optical thickness of medium when circularly-polarized light is incident; (c) component Q of backscattering light as a function of optical thickness of medium when linearly-polarized l

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    Influence of particle shape on spatial distribution of backscattering-light intensity in medium (i: circularly-polarized light is incident; ii: linearly-polarized light is incident). (a) Medium of spherical particles; (b) medium of elliptic particles with a/b=0.1; (c) medium of elliptic particles with a/b=2.5; (d) medium of cylindrical particles with D/L=0.2; (e) medium of cylindrical particles with D/L=2.5; (f) medium of Chebyshev particle

    Fig. 9. Influence of particle shape on spatial distribution of backscattering-light intensity in medium (i: circularly-polarized light is incident; ii: linearly-polarized light is incident). (a) Medium of spherical particles; (b) medium of elliptic particles with a/b=0.1; (c) medium of elliptic particles with a/b=2.5; (d) medium of cylindrical particles with D/L=0.2; (e) medium of cylindrical particles with D/L=2.5; (f) medium of Chebyshev particle

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    Spatial distributions of polarization degree of backscattering light from different media. (a) Medium of spherical particles; (b) medium of elliptic particles with a/b=0.1; (c) medium of elliptic particles with a/b=2.5; (d) medium of cylindrical particles with D/L=0.2; (e) medium of cylindrical particles with D/L=2.5; (f) medium of Chebyshev particles with n=4 and ε=0.15; (g) medium of Chebyshev particles with n=8 and <

    Fig. 10. Spatial distributions of polarization degree of backscattering light from different media. (a) Medium of spherical particles; (b) medium of elliptic particles with a/b=0.1; (c) medium of elliptic particles with a/b=2.5; (d) medium of cylindrical particles with D/L=0.2; (e) medium of cylindrical particles with D/L=2.5; (f) medium of Chebyshev particles with n=4 and ε=0.15; (g) medium of Chebyshev particles with n=8 and <

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    • Table 1. Validation of feasibility of proposed method (with different equivalent diameters)

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      Table 1. Validation of feasibility of proposed method (with different equivalent diameters)

      Method0.1 μm1 μm2 μm
      IQIQIQ
      Meridian Planes Monte Carlo[25]0.6769-0.10120.44800.04990.29260.0089
      Adding doubling method[25]0.6769-0.10150.44790.04990.29300.0089
      Proposed0.6771-0.10200.44660.04990.29050.0089

    • Table 2. Single-scattering parameters of Rayleigh scattering particles with different shapes

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      Table 2. Single-scattering parameters of Rayleigh scattering particles with different shapes

      ParameterxCsca /μm2Cext /μm2g
      1.00.59550.1353×10-30.1353×10-30.1091
      a/b0.10.59550.1834×10-40.1834×10-40.2146
      2.50.59550.8171×10-40.8171×10-40.1149
      0.10.59550.1602×10-40.1602×10-40.2314
      D/L2.50.59550.6610×10-40.6610×10-40.1058
      (n, ε)(8,0.1)0.59550.9278×10-40.9278×10-40.0978
      (4,0.15)0.59550.1093×10-30.1093×10-30.1052

    • Table 3. Single-scattering parameters of Mie scattering particles with different shapes

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      Table 3. Single-scattering parameters of Mie scattering particles with different shapes

      ParameterxCsca /μm2Cext /μm2g
      1.05.68452.63812.63810.9257
      a/b0.15.68450.74490.74490.8727
      2.55.68451.88941.88940.9181
      D/L0.25.68451.15251.15250.9017
      2.55.68451.69071.69070.9158
      (n, ε)(8,0.1)5.68452.13262.13260.9235
      (4,0.15)5.68452.31932.31930.9225
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    Kuntao Ye, Musha Ji'E, Shengjie Zhai. Influence of Particle Shape on Polarization Characteristics of Backscattering Light in Turbid Media[J]. Chinese Journal of Lasers, 2020, 47(1): 0105004

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    Paper Information

    Category: beam transmission and control

    Received: Jul. 22, 2019

    Accepted: Oct. 9, 2019

    Published Online: Jan. 9, 2020

    The Author Email: Kuntao Ye (mems_123@126.com)

    DOI:10.3788/CJL202047.0105004

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology