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Ray scattering by an arbitrarily oriented spheroid. II. Transmission and cross-polarization effects.

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Summary

This study examines how polarized light waves transmit through spheroids using ray theory. It reveals two cross-polarization effects impacting the scattered light intensity in the forward direction.

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Area of Science:

Electromagnetism and Optics
Wave Propagation
Scattering Theory

Background:

Ray theory provides a framework for understanding wave propagation and scattering phenomena.
Previous work established the diffracted plus reflected ray-theory electric field for spheroids.
Understanding wave transmission through complex shapes is crucial in various optical applications.

Purpose of the Study:

To analyze the transmission of arbitrarily polarized plane waves through arbitrarily oriented spheroids.
To investigate the short-wavelength limit using ray theory.
To approximate the far-zone scattered intensity in the forward hemisphere by incorporating transmitted fields.

Main Methods:

Application of ray theory to model wave transmission through spheroids.
Addition of the transmitted electric field to previously derived diffracted plus reflected fields.
Analysis in the short-wavelength limit for computational tractability.

Main Results:

The transmitted electric field was successfully incorporated into the scattering model.
Two distinct cross-polarization effects were identified in the transmitted wave.
These effects involve rotations of the polarization state relative to entrance/exit points and scattered fields.

Conclusions:

The study provides an approximation for far-zone scattered intensity, including transmitted wave contributions.
Identified cross-polarization phenomena offer insights into polarization changes during wave transmission.
The findings contribute to the understanding of electromagnetic wave interaction with spheroidal scatterers.