Johneph Sukham
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Optical readout and actuation of plasmonic nano-optomechanical drum resonators Open
We demonstrate optical readout and actuation of nanomechanical motion using plasmonic fields in a nanoscale gap waveguide. The top gold layer of the waveguide is free to vibrate like a drumhead, and patterned with an optical grating to fac…
Fabrication of 20 nm period multilayer metal-dielectric structures and initial patterning tests Open
The use of noble metals within nanophotonics and nanoplasmonics in general is a well established practice. However, when the thickness of the metals used, in particular gold, decreases, their quality suffers. In particular, the influence o…
Photonic spin Hall effect in hyperbolic metamaterials at visible wavelengths Open
The photonic spin Hall effect in transmission is a transverse beam shift of the out-coming beam depending on polarization of the incoming beam. The effect can be significantly enhanced by materials with high anisotropy. We report, to the b…
High-quality ultrathin gold layers for use in plasmonic and metamaterials applications Open
The propagation of electromagnetic waves can be manipulated at the nanoscale by surface plasmons supported by ultra thin metal layers. An adhesion layer, with thickness in the order of few nanometerss is used for depositing ultra thin meta…