Lasing with multimode guided waves with exceptional degeneracy

Tarek Mealy; Albert Herrero Parareda; Nathaniel Furman; Alireza Nikzamir; Filippo Capolino

doi:10.1117/12.2634283

3 October 2022 Lasing with multimode guided waves with exceptional degeneracy

Tarek Mealy, Albert Herrero Parareda, Nathaniel Furman, Alireza Nikzamir, Filippo Capolino

Proceedings Volume PC12196, Active Photonic Platforms 2022; PC121961M (2022) https://doi.org/10.1117/12.2634283
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

We will discuss two kinds of exceptional points of degeneracy in waveguides and their respective application in lasers. Such exceptional points occur in waveguides with balanced loss and gain (e.g., PT symmetry), and in waveguides without loss and gain (e.g., periodic Si waveguides). Waveguides with such exceptional points have a strong degeneracy of their wavenumbers and polarization states that enables specific wave physics, only found in these degenerate systems. We will discuss advantages and disadvantages of both concepts to conceive laser regimes, related to high power, high spectral purity, high efficiency, etc, and show some realistic designs involving Si ridge waveguides.

Conference Presentation

Citation Download Citation

Tarek Mealy, Albert Herrero Parareda, Nathaniel Furman, Alireza Nikzamir, and Filippo Capolino "Lasing with multimode guided waves with exceptional degeneracy", Proc. SPIE PC12196, Active Photonic Platforms 2022, PC121961M (3 October 2022); https://doi.org/10.1117/12.2634283

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