Coherent control of critical coupling in non-PT-symmetric defective photonic crystal

Nancy Ghangas; Shubhrangshu Dasgupta

doi:10.1117/12.3016376

10 June 2024 Coherent control of critical coupling in non-PT-symmetric defective photonic crystal

Nancy Ghangas, Shubhrangshu Dasgupta

Proceedings Volume 12991, Nanophotonics X; 129910O (2024) https://doi.org/10.1117/12.3016376
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

We have demonstrated that the defective photonic crystal attains exceptional optical properties by doping its defect layer with lambda type three-level atoms. We have incorporated transfer matrix formalism and observed that the crystal behaves as non-PT symmetric one by violating symmetry relations of the corresponding matrix. As a result, we have shown that the two frequency modes lying in the band gap show maximum asymmetry in reflection and absorption at critical coupling, when atom is in resonance with the defect mode which can be coherently controlled while the critical coupling remains robust when crystal is operated at off-resonance.

Conference Presentation

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

Citation Download Citation

Nancy Ghangas and Shubhrangshu Dasgupta "Coherent control of critical coupling in non-PT-symmetric defective photonic crystal", Proc. SPIE 12991, Nanophotonics X, 129910O (10 June 2024); https://doi.org/10.1117/12.3016376

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