Broadening of Spectral Lines for Decaying Trapped States of Photonic Meta-Atoms

Verfasst von

Shihao Zhang, Ihar Babushkin, Uwe Morgner, Ayhan Demircan, Oliver Melchert

Abstract

We study photonic meta-atoms in nonlinear waveguides. They shed resonant radiation upon propagation, inspiring an analogy to radiative broadening in atomic spectra. Meta-atoms consist of a soliton and weak trapped states, bound together by cross-phase modulation. Higher-order dispersion enables phase-matching resonances that couple trapped states to the continuum, generating resonant radiation with a Lorentzian lineshape. We demonstrate that their linewidth follows from the finite lifetime of the corresponding trapped-state and discuss prospects for observing the reported effect in photonic-crystal fibres.

Details

Organisationseinheit(en): PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
Institut für Quantenoptik
Typ: Artikel
Journal: Electronics letters
Band: 62
ISSN: 0013-5194
Publikationsdatum: 08.04.2026
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Elektrotechnik und Elektronik
Elektronische Version(en): https://doi.org/10.1049/ell2.70578 (Zugang: Offen )