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Updated: Sep 21, 2025

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

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Published on: September 26, 2014

Spatial Dispersion in Hypercrystal Distributed Feedback Lasing.

Bartosz Janaszek¹, Paweł Szczepański^1,2

¹Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-665 Warsaw, Poland.

Materials (Basel, Switzerland)

|May 28, 2022

Summary

This summary is machine-generated.

This study explores spatial dispersion in photonic hypercrystals (PHCs). Strong dispersion enables novel light generation effects in distributed feedback (DFB) lasers, offering control over polarization and spectral output.

Keywords:

DFB laser hyperbolic metamaterials photonic hypercrystals spatial dispersion

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Area of Science:

Photonics and Optics
Materials Science

Background:

Photonic hypercrystals (PHCs) offer unique optical properties.
Understanding spatial dispersion is crucial for advanced photonic devices.

Purpose of the Study:

Investigate the role of spatial dispersion in PHCs.
Explore nonlocality for novel light generation in distributed feedback (DFB) lasers.
Compare local and nonlocal generation phenomena.

Main Methods:

Effective medium approximation.
Anisotropic transfer matrix method for threshold laser generation modeling.
Analysis of different PHC geometries.

Main Results:

Strong spatial dispersion leads to spectrally shifted Bragg wavelengths for TE and TM polarizations.
Lowered generation thresholds and selective polarization generation observed.
Simultaneous generation of TE and TM waves at different frequencies is achievable.

Conclusions:

Spatial dispersion in PHCs enables new light generation effects not seen with weak dispersion.
PHC design can control nonlocality for tailored laser performance.
Results challenge traditional local approaches to DFB laser operation.