School of Mathematical and Physical Sciences

EPic Laboratory

Emergent Photonics Laboratory

The Emergent Photonics Lab is a fertile research enviroment at the University of Sussex focused on the "emergent" photonic properties in complex nonlinear optical systems. The lab presently hosts the work of 17 researchers directed by Alessia Pasquazi and Marco Peccianti, the lab founders. In particular, the research staff now consists of three Post Doctoral researchers, seven PhD students and seven undergraduate research students. Research interests are split into two major directions, on integrated nonlinear photonic systems and their application in quantum technologies and in cutting edge Terahertz science. 

Emergent Photonics Laboratory (EPic), Dept. of Physics and Astronomy, Pevensey 2 4A20.

External Project-Specific Websites:

       TIMING Logo

OSA Student Chapter

osa chapter bannerThe Emergent Photonics Lab supports the established Optical Society of America Student Chapter at the University of Sussex. In collaboration with the Quantum Talks, short weekly seminars have been organised to encourage collaboration between research groups.

We welcome both internal and external students or staff who are interested in presenting, you can subscribe to the Quantum Talks here.

Funding From:

erc and eu logos     quantum hub logo      epsrc high res

EPic Social Media

instagram logo twitter logo youtube logo

Laser Cavity-Soliton Microcombs

12th March 2019

Nature Photonics CoverHualong Bao, Andrew Cooper, Maxwell Rowley, Luigi Di Lauro, Juan Sebastian Totero Gongora, Benjamin Wetzel, Marco Peccianti and Alessia Pasquazi have published a ground-breaking article in Nature Photonics. 

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.

More details can be found in the journal article itself or in the press release of the University of Sussex.