294 citations · 646 across the 14 of their papers we have counts for
7 papers · 1 filter
A group theoretical route to deterministic Weyl points in chiral photonic lattices
Matthias Saba, Joachim M. Hamm, Jeremy J. Baumberg +1
Classical topological phases derived from point degeneracies in photonic bandstructures show intriguing and unique behaviour. Previously identified exceptional points are based on…
Plasmonic Nano-Gap Tilings: Light-Concentrating Surfaces for Low-Loss Photonic Integration
Paul M. Z. Davies, Joachim M. Hamm, Yannick Sonnefraud +2
Owing to their ability to concentrate light on nanometer scales, plasmonic surface structures are ideally suited for on-chip functionalization with nonlinear or gain materials. How…
Plasmonic Nanolasers Without Cavity, Threshold and Diffraction Limit using Stopped Light
Kosmas L. Tsakmakidis, Joachim M. Hamm, Tim W. Pickering +1
We present a plasmonic waveguide where light pulses are stopped at well-accessed complex-frequency zero-group-velocity points. Introducing gain at such points results in cavity-fre…
Control and Dynamic Competition of Bright and Dark Lasing States in Active Nanoplasmonic Metamaterials
Sebastian Wuestner, Joachim M. Hamm, Andreas Pusch +3
Active nanoplasmonic metamaterials support bright and dark modes that compete for gain. Using a Maxwell-Bloch approach incorporating Langevin noise we study the lasing dynamics in…
Theory of light amplification in active fishnet metamaterials
Joachim M. Hamm, Sebastian Wuestner, Kosmas L. Tsakmakidis +1
We establish a theory that traces light amplification in an active double-fishnet metamaterial back to its microscopic origins. Based on ab initio calculations of the light/plasmon…
Gain and plasmon dynamics in negative-index metamaterials
Sebastian Wuestner, Andreas Pusch, Kosmas L. Tsakmakidis +2
Photonic metamaterials allow for a range of exciting applications unattainable with ordinary dielectrics. However, the metallic nature of their meta-atoms may result in increased o…
Overcoming losses with gain in a negative refractive index metamaterial
Sebastian Wuestner, Andreas Pusch, Kosmas L. Tsakmakidis +2
On the basis of a full-vectorial three-dimensional Maxwell-Bloch approach we investigate the possibility of using gain to overcome losses in a negative refractive index fishnet met…