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Related Experiment Video

Updated: May 18, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

First-principles method for high-Q photonic crystal cavity mode calculations.

Sahand Mahmoodian¹, J E Sipe, Christopher G Poulton

¹CUDOS and IPOS, School of Physics, University of Sydney, Australia.

|October 6, 2012

Summary

This summary is machine-generated.

We developed a fast method to calculate radiation properties for high-quality photonic crystal cavities. This new approach significantly speeds up the computation of cavity modes and their radiation patterns.

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Area of Science:

Photonics
Computational Physics
Materials Science

Background:

Photonic crystal cavities are crucial for light manipulation.
Calculating their radiation properties is computationally intensive.
Existing methods limit the design and analysis of these cavities.

Purpose of the Study:

To introduce a novel, rapid method for computing photonic crystal cavity radiation properties.
To enable faster design and analysis of ultra-high quality factor cavities.
To elucidate the relationship between cavity design and radiation characteristics.

Main Methods:

Developed a first-principles computational method named Frequency-domain Approach for Radiation (FAR).
FAR computes far-field radiation patterns and quality factors.
FAR achieves speeds approximately 100 times faster than traditional finite-difference time-domain methods.

Main Results:

Demonstrated the computational efficiency of the FAR method.
Successfully computed radiation properties of ultra-high quality factor photonic crystal cavities.
Established the dependence of the radiation pattern on cavity perturbation and Bloch modes.

Conclusions:

The FAR method offers a significant speedup for calculating photonic crystal cavity radiation properties.
This method facilitates the design and optimization of advanced photonic devices.
Understanding the influence of perturbations and Bloch modes is key to controlling radiation.