Non-Hermitian skin effect in phase-locked laser arrays

Yuzhou G. Liu; Omid Hemmatyar; Georgios G. Pyrialakos; Pawel S. Jung; Demetrios N. Christodoulides; Mercedeh Khajavikhan

doi:10.1117/12.2633532

3 October 2022 Non-Hermitian skin effect in phase-locked laser arrays

Yuzhou G. Liu, Omid Hemmatyar, Georgios G. Pyrialakos, Pawel S. Jung, Demetrios N. Christodoulides, Mercedeh Khajavikhan

Author Affiliations +

Proceedings Volume PC12196, Active Photonic Platforms 2022; PC121961O (2022) https://doi.org/10.1117/12.2633532
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

A new approach for engineering the controllable asymmetric coupling in active cavity lattices is experimentally demonstrated. Non-Hermitian skin effect is observed in the proposed Hatano-Nelson phase-locked laser array along with single mode lasing and variable emission distribution. The freedom to design at will the exchange interactions in active lattices enables many possibilities in optics, ranging from a new class of reconfigurable lasers capable of generating steerable emission, to non-Hermitian topological lattices.

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Yuzhou G. Liu, Omid Hemmatyar, Georgios G. Pyrialakos, Pawel S. Jung, Demetrios N. Christodoulides, and Mercedeh Khajavikhan "Non-Hermitian skin effect in phase-locked laser arrays", Proc. SPIE PC12196, Active Photonic Platforms 2022, PC121961O (3 October 2022); https://doi.org/10.1117/12.2633532

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