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Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
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Anisotropy Characterization of Metallic Lens Structures
Yosef T Aladadi1, Majeed A S Alkanhal1
1Department of Electrical Engineering, King Saud University, Riyadh 11421, Saudi Arabia.
Micromachines
|September 28, 2021
Summary
This study introduces a precise method for characterizing metallic lenses using electromagnetic parameters. The findings reveal anisotropic behavior crucial for accurate lens design and performance optimization.
Area of Science:
- Electromagnetics
- Materials Science
- Metamaterials
Background:
- Accurate electromagnetic characterization of metallic lenses is essential for their effective application.
- Existing methods like the eigenmode method may not provide sufficient accuracy for complex lens behaviors.
Purpose of the Study:
- To present a comprehensive electromagnetic characterization method for metallic lenses.
- To accurately determine the tensorial electromagnetic parameters of metallic lenses.
Main Methods:
- Utilizing free-space transmission and reflection coefficients for parameter extraction.
- Analyzing the anisotropic behavior and dispersive properties of the lenses.
Main Results:
- The method accurately determines tensorial permittivity and permeability, revealing significant anisotropy.
- Dispersive permeability and wave impedance were observed.
- Accurate effective refractive index and wave impedance values were obtained, outperforming simpler methods.
Conclusions:
- The proposed method provides accurate electromagnetic parameters for metallic lenses.
- Anisotropy, impedance matching, and losses significantly impact lens performance.
- Oblique incidence effects on lens performance due to anisotropy are demonstrated.
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