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Related Concept Videos

Group Polarization01:01

Group Polarization

Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
Potential Due to a Polarized Object01:29

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A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
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Angular dependence of polarizing beam-splitter cubes.

J Larry Pezzaniti, R A Chipman

    Applied Optics
    |October 2, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Polarizing beam-splitter cubes exhibit polarization aberrations due to varying polarizing axes and angle-dependent coatings. This study quantifies these aberrations using diattenuation and Mueller matrices for improved optical system performance.

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    Area of Science:

    • Optics and Photonics
    • Optical Engineering

    Background:

    • Polarizing beam-splitter cubes are critical components in optical systems.
    • Their performance can be degraded by polarization aberrations, especially with non-collimated light.
    • Understanding these aberrations is key for accurate imaging and optical computing.

    Purpose of the Study:

    • To investigate the field-of-view dependence of polarizing beam-splitter cubes.
    • To characterize and quantify polarization aberrations in these devices.
    • To provide a framework for understanding and mitigating polarization effects in optical systems.

    Main Methods:

    • Studied the field-of-view dependence of polarizing beam-splitter cubes.
    • Analyzed polarization aberration based on variations in polarizing axes and coating performance.
    • Utilized an imaging polarimeter to measure key performance metrics.
    • Derived the Mueller matrix for polarizing beam-splitter cubes.

    Main Results:

    • Identified two primary causes for polarization aberration: varying orientations of polarizing axes and angle-dependent coating performance.
    • Quantified polarization aberration using diattenuation (polarizing efficiency).
    • Measured six figures of merit for three sample polarizing beam-splitter cubes.
    • Developed a Mueller matrix model based on transmittance, reflectance, and phase retardance.

    Conclusions:

    • Polarization aberrations are significant in polarizing beam-splitter cubes and depend on the field of view.
    • Diattenuation and Mueller matrix analysis provide effective methods for characterizing these aberrations.
    • The derived Mueller matrix is valuable for optical system design and thin-film analysis.