Laser cavity-soliton microcombs

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

19 Scopus Citations
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  • Hualong Bao
  • Andrew Cooper
  • Maxwell Rowley
  • Luigi Di Lauro
  • Juan Sebastian Totero Gongora
  • Brent E. Little
  • Gian-Luca Oppo
  • Roberto Morandotti
  • David J. Moss
  • Benjamin Wetzel
  • Marco Peccianti
  • Alessia Pasquazi

Related Research Unit(s)


Original languageEnglish
Pages (from-to)384-389
Journal / PublicationNature Photonics
Issue number6
Online published11 Mar 2019
Publication statusPublished - Jun 2019


Microcavity-based frequency combs, or ‘microcombs’, have enabled many fundamental breakthroughs through the discovery of temporal cavity-solitons. These self-localized waves, described by the Lugiato–Lefever equation, are sustained by a background of radiation usually containing 95% of the total power. Simple methods for their efficient generation and control are currently being investigated to finally establish microcombs as out-of-the-lab tools. Here, we demonstrate microcomb laser cavity-solitons. Laser cavity-solitons are intrinsically background-free and have underpinned key breakthroughs in semiconductor lasers. By merging their properties with the physics of multimode systems, we provide a new paradigm for soliton generation and control in microcavities. We demonstrate 50-nm-wide bright soliton combs induced at average powers more than one order of magnitude lower than the Lugiato–Lefever soliton power threshold, measuring a mode efficiency of 75% versus the theoretical limit of 5% for bright Lugiato–Lefever solitons. Finally, we can tune the repetition rate by well over a megahertz without any active feedback.

Citation Format(s)

Laser cavity-soliton microcombs. / Bao, Hualong; Cooper, Andrew; Rowley, Maxwell; Di Lauro, Luigi; Totero Gongora, Juan Sebastian; Chu, Sai T.; Little, Brent E.; Oppo, Gian-Luca; Morandotti, Roberto; Moss, David J.; Wetzel, Benjamin; Peccianti, Marco; Pasquazi, Alessia.

In: Nature Photonics, Vol. 13, No. 6, 06.2019, p. 384-389.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal