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.

Funding From:

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Latest EPic News

High-Energy Terahertz Surface Optical Rectification

2nd February 2018
Nano Energy Graphical Abstract

Luke Peters, Jacob Tunesi, Alessia Pasquazi and Marco Peccianti have published an open-access article in Nano Energy. 

The interest in surface terahertz emitters lies in their extremely thin active region, typically hundreds of atomic layers, and the agile surface scalability. The ultimate limit in the achievable emission is determined by the saturation of the several different mechanisms concurring to the THz frequency conversion. The current state of the art suggests that in field-induced optical rectification a maximum limit of the emission may exist and it is ruled by the photocarrier induced neutralisation of the medium's surface field. This would represent the most important impediment to the application of surface optical rectification in high-energy THz emitters. We experimentally unveil novel physical insights in the THz conversion at high excitation energies mediated by the ultrafast surface optical rectification process. The main finding is that the expected total saturation of the Terahertz emission vs pump energy does not actually occur.