IR/MW multilayered dielectric plate beam combiner design, optimization, and evaluation

Area of Science:

• Electromagnetics
• Materials Science
• Optical Engineering

Background:

• Traditional beam combiner designs often address infrared (IR) and microwave (MW) spectra separately.
• Integrating IR and MW functionalities into a single device presents significant design challenges.
• Existing methods lack a unified approach for optimizing multilayered dielectric structures across different electromagnetic frequencies.

Purpose of the Study:

• To develop and validate a unified methodology for the design, optimization, and evaluation of IR/MW multilayered dielectric plate beam combiners.
• To integrate established MW multilayered dielectric design theory with IR film design principles.
• To establish a systematic procedure for achieving optimal performance for both IR and MW characteristics simultaneously.

Main Methods:

• Unified design theory combining MW multilayered dielectrics and IR film principles using transmission line theory.
• Development of an objective function for optimizing the beam combiner's performance.
• Construction of six distinct evaluation indices to assess the beam combiner's effectiveness.
• Application of the proposed method to a specific design example for validation.

Main Results:

• The unified method successfully integrates IR and MW design theories.
• The optimization process, guided by the objective function, yields effective beam combiner structures.
• The evaluation indices provide a comprehensive assessment of the device's performance across both spectra.
• The example demonstrated the method's feasibility in meeting joint IR/MW design requirements.

Conclusions:

• The proposed unified method is effective for the joint design, optimization, and evaluation of IR/MW beam combiners.
• The transmission line theory-based approach provides a robust framework for multilayered dielectric structures.
• This methodology offers a systematic procedure for developing advanced beam combiners with dual-spectrum capabilities.