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Propagation-induced polarization changes in partially coherent optical beams
1The Institute of Optics and the Rochester Theory Center, University of Rochester, New York 14627, USA.
Summary
The vector nature of light affects partially coherent optical beams propagating through dielectric media. Polarization changes occur during propagation, influenced by the beam
Area of Science:
- Optics and Photonics
- Electromagnetism
- Wave Propagation
Background:
- Partially coherent optical beams exhibit complex propagation dynamics.
- Understanding polarization changes is crucial for optical system design.
- The vector nature of light influences beam characteristics.
Purpose of the Study:
- To investigate polarization changes in partially coherent optical beams.
- To analyze the impact of the electromagnetic field's vector nature.
- To determine factors influencing polarization evolution during propagation.
Main Methods:
- Utilized the Gaussian-Schell model for the cross-spectral-density tensor.
- Studied the propagation of partially coherent optical beams in linear, nondispersive dielectric media.
- Accounted for the vector nature of the electromagnetic field.
Main Results:
- Propagation induces changes in the degree of polarization.
- Polarization becomes nonuniform across the beam cross-section.
- The coherence radius significantly impacts polarization changes.
Conclusions:
- Vector effects are critical for understanding beam polarization.
- Coherence properties dictate the extent of polarization modification.
- Bandwidth plays a minor role for symmetric spectra.