Pixelated photonic crystals for THz applications

Urban Mur; Miha Ravnik

doi:10.1117/12.2692238

13 March 2024 Pixelated photonic crystals for THz applications

Urban Mur, Miha Ravnik

Proceedings Volume 12907, Emerging Liquid Crystal Technologies XIX; 129070B (2024) https://doi.org/10.1117/12.2692238
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Photonic crystals manipulate light in unique and beneficial ways, acting as waveguides, laser cavities, and facilitating topological light propagation. However, the reconfiguration of photonic crystals has been limited, hindering their versatility. We have recently introduced the concept of pixelated 2D photonic crystals, where a pixelated matrix of the material enables variability in the dielectric profile. By changing the orientation state of liquid crystal molecules within individual pixels an effective refractive index for a specific input polarisation is altered. In this work we numerically show how different distributions of ”on” and ”off” state pixels and therefore different effective refractive index configurations in the periodically repeated unit cell effect the band structure of the material and its optical properties. Considering the size of pixels and unit cells, such photonic crystals would enable dynamic control of THz waves.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Urban Mur and Miha Ravnik "Pixelated photonic crystals for THz applications", Proc. SPIE 12907, Emerging Liquid Crystal Technologies XIX, 129070B (13 March 2024); https://doi.org/10.1117/12.2692238

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