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20 papers · 1 filter
Photocurrent Enhancement of Graphene Photodetectors by Photon Tunneling of Light into Surface Plasmons
Alireza Maleki, Benjamin P. Cumming, Min Gu +3
We demonstrate that surface plasmon resonances excited by photon tunneling through an adjacent dielectric medium enhance photocurrent detected by a graphene photodetector. The devi…
Interference between the modes of an all-dielectric meta-atom
David A. Powell
The modes of silicon meta-atoms are investigated, motivated by their use as building blocks of Huygens' metasurfaces. A model based on these modes is presented, giving a clear phys…
Digital Waveguide Adiabatic Passage Part 2: Experiment
Vincent Ng, Jesse A. Vaitkus, Zachary J. Chaboyer +5
Using a femtosecond laser writing technique, we fabricate and characterise three-waveguide digital adiabatic passage devices, with the central waveguide digitised into five discret…
Digital Waveguide Adiabatic Passage Part 1: Theory
Jesse A. Vaitkus, M. J. Steel, Andrew D. Greentree
Spatial adiabatic passage represents a new way to design integrated photonic devices. In conventional adiabatic passage designs require smoothly varying waveguide separations. Here…
Enhancing stellar spectroscopy with extreme adaptive optics and photonics
Nemanja Jovanovic, Christian Schwab, Nick Cvetojevic +2
Extreme adaptive optics systems are now in operation across the globe. These systems, capable of high order wavefront correction, deliver Strehl ratios of 90% in the near-infrared.…
Parasitic Photon-Pair Suppression via Photonic Stop-Band Engineering
L. G. Helt, Agata M. Branczyk, Marco Liscidini +1
We calculate that an appropriate modification of the field associated with only one of the photons of a photon pair can suppress generation of the pair entirely. From this general…