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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Coupled dipole method for radiation dynamics in finite photonic crystal structures
Frédéric Bordas1, Nicolas Louvion, Ségolène Callard
1Laboratoire d'Electronique, Optoélectronique et Microsystèmes-UMR CNRS 5512-Ecole Centrale de Lyon 36, Ecully, France.
Summary
We developed a method to simulate light dynamics in photonic crystals. This approach accurately predicts spontaneous emission rates and optical properties within defect cavities.
Area of Science:
- Optics and Photonics
- Computational Physics
- Materials Science
Background:
- Photonic crystals offer unique light manipulation properties.
- Understanding radiation dynamics is crucial for device applications.
- Simulating light-matter interactions in finite structures is computationally challenging.
Purpose of the Study:
- To present a coupled-dipole method for simulating radiation dynamics in finite 3D photonic crystals.
- To calculate spontaneous emission rates in a defect cavity within a slab photonic crystal.
- To analyze the spectral response, near-field, and far-field radiation patterns.
Main Methods:
- Discretization of the photonic crystal structure in real space.
- Self-consistent computation of the local electric field.
- Coupled-dipole treatment for radiation dynamics in the weak-coupling regime.
Main Results:
- Calculated spontaneous emission rate for a source in a defect cavity.
- Determined the cavity spectral response.
- Analyzed the near-field modal structure and far-field radiation pattern.
Conclusions:
- The coupled-dipole method provides a viable approach for studying radiation dynamics in photonic crystals.
- The simulation results align with experimental observations of optical modes.
- This method aids in understanding and designing photonic crystal devices.
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