A recurring theme in nanophotonics is the ability of metal nanostructures to imbue artificial materials with new function. Here we explore metallic nano-antennas as the building blocks of second order nonlinear optical metamaterials. While nonlinear effects in natural materials must gradually accumulate weak nonlinearity across macroscopic crystal dimensions, a small volume of metamaterial, and even isolated antennas, can create surprisingly strong effects. We show that the nonlinear selection rules that typically prevent dipolar SHG from nano-antennas can be engineered so they effectively radiate SHG. This provides access to other second order optical processes, which we have recently observed.
|Publication status||Published - Aug 2017|
|Event||SPIE: Optics + Photonics: Nanoscience + Engineering 2017: Active Photonic Platforms IX - San Diego Convention Center, San Diego, California, United States|
Duration: 6 Aug 2017 → 10 Aug 2017
|Conference||SPIE: Optics + Photonics: Nanoscience + Engineering 2017|
|City||San Diego, California|
|Period||6/08/17 → 10/08/17|
- harmonic generation