Max Planck Institute for the Science of Light, ErlangenVisit and contact
Del'Haye LabMicrophotonics Research Laboratory

Research

Microcombs and solitons

A microresonator can turn one laser line into a comb of evenly spaced frequencies. We study how solitons form and interact in these resonators and how to engineer their dispersion, from dark soliton combs in thin multimode silicon nitride rings to solitons induced by fifth-order dispersion and combs that span an octave. Evenly spaced combs also serve as rulers for light: we work on frequency measurement, spectroscopy and distance sensing with resonators and stabilised lasers.

Draft text, to be reviewed by the group.

Selected publications

  1. Symmetry-Broken Cavity Solitons and Collective Polarization Conformity in Fabry-Perot Kerr ResonatorsY. G. Sanvert, A. Alabbadi, L. Hill, Y. Xu, G. Xu, G. -L. Oppo, S. Coen, E. Lucas, P. Del'Haye, and J. FatomearXiv:2602.21946 (Feb 2026)
  2. Visible octave frequency combs in silicon nitride nanophotonic waveguides driven by Ti: sapphire lasersA. Alabbadi, E. Allan, H. Ostapenko, P. Castro-Marin, D. T. Reid, and P. Del'HayearXiv:2601.04047 (Jan 2026)
  3. Octave-spanning frequency comb from a single-diode-pumped 1 GHz Ti: sapphire laserE. Allan, A. Alabbadi, P. Castro-Marín, H. Ostapenko, P. Del’Haye, and D. T. ReidOpt. Lett. 51, 337 (Jan 2026)
  4. Turnkey soliton frequency combs from a linear fiber cavity with microresonator mirrorH. Zhang, S. Zhang, T. Bi, Y. Zhang, H. Yan, M. Kheyri, Y. Zhuang, A. Pal, J. He, S. Pan, and P. Del’HayeOpt. Express 33 (Oct 2025)
  5. Microresonator soliton frequency combs via cascaded Brillouin scatteringH. Zhang, S. Zhang, T. Bi, G. Ghalanos, Y. Zhang, H. Yan, A. Pal, J. He, S. Pan, and P. Del'HayeCommun. Phys. 8 (May 2025)arXiv:2312.15506
  6. Near-Infrared Dual-Band Frequency Comb Generation from a Silicon ResonatorK. Zhong , Y. Zhang , S. Zhang , Y. Zhang , Y. Li , Y. Qin , Y. Wang , J. M. C. Boggio , X. Sun , C. Shu , P. Del'Haye , and H. K. TsangLaser Photonics Rev., 2301366 (Nov 2024)
  7. Frequency comb enhancement via the self-crystallization of vectorial cavity solitonsG. N. Campbell, L. Hill, P. Del’Haye, and G.-L. OppoOpt. Express 32, 37691 (Oct 2024)arXiv:2403.16547
  8. On-the-fly precision spectroscopy with a dual-modulated tunable diode laser and Hz-level referencing to a cavityS. Zhang, T. Bi, and P. Del’HayeAdvanced Photonics 6, 046003arXiv:2303.14180SPIE News Article

All publications

From the news

Postdoc positions availableMicrocomb SimulatorAbdullah wins poster award at Nonlinear Photonics Winter SchoolIntegrated optical switches based on symmetry breakingSegmented sidewall modulation for dispersion engineeringBookchapter on Chip-Based Soliton Frequency Combs