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Application of Wigner Distribution Function for THz Propagation Analysis.

Michael Gerasimov1, Egor Dyunin1, Jacob Gerasimov1

  • 1Department of Electrical and Electronic Engineering, Ariel University, Ariel 40700, Israel.

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|January 11, 2022
PubMed
Summary
This summary is machine-generated.

We developed a simulation platform for designing transmission lines (TL) for terahertz (THz) radiation sources. This tool uses Wigner transforms and ray tracing for flexible analysis of electromagnetic fields in accelerators.

Keywords:
THz analysisWigner distribution functiontransmission line

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Area of Science:

  • Physics
  • Engineering
  • Accelerator Science

Background:

  • Designing transmission lines (TL) for tunable, broad-spectrum terahertz (THz) radiation sources is complex.
  • Existing methods may lack flexibility in analyzing the electromagnetic (EM) fields crucial for accelerator components.

Purpose of the Study:

  • To present a simulation platform for designing transmission lines (TL) for innovative accelerators.
  • To enable flexible analysis of electromagnetic fields for terahertz (THz) radiation sources.

Main Methods:

  • Developed a 3D space-frequency simulation tool for radiation pulse analysis.
  • Represented the total electromagnetic (EM) field using cavity eigenmodes in the frequency domain.
  • Utilized the Wigner transform to convert EM fields to geometric-optical ray representation for ray tracing.

Main Results:

  • The platform allows analysis of any mathematical pulse function, provided the original pulse exists.
  • Wigner's representation enables the study of field evolution dynamics for initial TL design.
  • Ray tracing facilitates linear and non-linear regime analysis, supporting parallel processing and machine learning applications.

Conclusions:

  • The developed simulation platform offers a flexible and powerful approach for designing transmission lines (TL) for THz radiation sources.
  • This methodology supports the analysis of multimode radiation generation in free-electron lasers (FELs) under various operational parameters.