Controlling frequency comb line spacing via symmetry broken faticons

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Hill, Lewis and Lucas, Erwan and Ghosh, Alekhya and Mazo Vásquez, Juan Diego and Gohsrich, Julius T. and Pal, Arghadeep and Yan, Haochen and Del'Haye, Pascal and Oppo, Gian-Luca and Coen, Stéphane and Kunst, Flore K. and Fatome, Julien; (2025) Controlling frequency comb line spacing via symmetry broken faticons. In: 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) . IEEE, DEU. ISBN 979-8-3315-1252-1 (https://doi.org/10.1109/cleo/europe-eqec65582.2025...)

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Abstract

Recently, a novel temporal structure known as the faticon has been identified within ring resonators composed of Kerr materials [1]. An example of a faticon is shown in Fig. 1(a), where its unique structure is seen to depend on two interlocked field components, |E±|2. These components co-propagate within the ring resonator but exhibit left- and right-circular polarizations, respectively. Faticons were initially predicted through a coupled set of (normalized) Lugiato-Lefever equations and have since been experimentally observed [1]. A key mechanism enabling the existence of a faticon is the spontaneous symmetry breaking (SSB) of light [2]–[5], wherein the symmetry between the two field components' intensities |E+|2 and |E−|2 spontaneously breaks (|E+|2≠|E−|2) due to an infinitesimal change in a system parameter, such as the cavity detuning θ.

ORCID iDs

Hill, Lewis, Lucas, Erwan, Ghosh, Alekhya, Mazo Vásquez, Juan Diego, Gohsrich, Julius T., Pal, Arghadeep, Yan, Haochen, Del'Haye, Pascal, Oppo, Gian-Luca ORCID logoORCID: https://orcid.org/0000-0002-5376-4309, Coen, Stéphane, Kunst, Flore K. and Fatome, Julien;
  • Item type:Book Section
    ID code:93919
    Dates:
    Date
    Event
    23 June 2025
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:25 Aug 2025 12:09
    Last modified:10 Sep 2026 05:37
    URI:https://strathprints.strath.ac.uk/id/eprint/93919
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